Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9132cbd0d005ac1…

MALICIOUS

PDF

113.6 KB Created: 2021-03-17 23:55:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 5ba75ac5b1de886a534ddf1b7e5eee40 SHA-1: 4929816527fb74eda1d36ab8a7e5038514feb122 SHA-256: c9132cbd0d005ac1ee9feab99976b023d57adf2d89c70f0cd7f92245c8860171
272 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

This PDF file is classified as malicious by ML models and ClamAV, indicating a high likelihood of malicious intent. It contains multiple links to known malicious redirectors and disposable hosting, suggesting a phishing or malware distribution campaign. The presence of heuristics related to clipboard command lures, download buttons, and password-protected archive handoffs further supports the conclusion that the document is designed to trick the user into executing malicious code or downloading a payload. No scripts were extracted, but the overall structure and linked URLs point to a phishing or downloader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dafemum.ru/strik?utm_term=emule+kad+list+2020 In PDF document text
    • https://cdn.sqhk.co/semegopo/d2DK0jg/baby_panda_birthday_party_apk.pdfIn PDF document text
    • http://trokot-shopnew.online/sulujuragefeteduap70e.pdfIn PDF document text
    • http://homearfes.com/herbalife_marketing_plan_2019hiogs.pdfIn PDF document text
    • https://zusabave.weebly.com/uploads/1/3/1/4/131406295/kuzam-fegigajugubivap.pdfIn PDF document text
    • http://effektzhizni.ru/zuxerezojutanup1xel.pdfIn PDF document text
    • https://cdn.sqhk.co/zudoputasafe/gdAiijd/vegutajuwofojezozowejo.pdfIn PDF document text
    • http://osmosiotzs.fun/senetexaxafxzyjv.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/hhuohg6/space_wallpaper_for_pc_free_download.pdfIn PDF document text
    • https://falugasotemo.weebly.com/uploads/1/3/1/4/131410545/zepulop_xinapewip.pdfIn PDF document text
    • http://bbbbbbbbeeee.space/chicken_run_ideas_cheapr59t5.pdfIn PDF document text
    • http://rituralajozeli.iblogger.org/watchos_6._0._1_won_t.pdfIn PDF document text
    • http://dalnoboyi.xyz/kodapazugokodotil4nww.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/ZjcVgeg/16663787203.pdfIn PDF document text
    • https://xawizavikerid.weebly.com/uploads/1/3/4/5/134525990/1ace8156.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/Tiihcjj/zaxatifak.pdfIn PDF document text
    • https://libadelalisam.weebly.com/uploads/1/3/4/5/134579317/1606ef.pdfIn PDF document text
    • http://prizinsta365.site/vufimuludukuselejamuwugd36y8.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/1400785017c27rv.pdfIn PDF document text
    • https://bunofavaluz.weebly.com/uploads/1/3/4/6/134661637/8713053.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lalexipitu.rf.gd/what_techniques_are_used_in_behavior_therapy.pdfIn PDF document text
    • http://defizal.epizy.com/adobe_illustrator_cs5_free_for_pc.pdfIn PDF document text
    • http://wadepexarupuwa.rf.gd/76135371187.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00019380.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x19380 21152 bytes
SHA-256: e63f3bb473d779087989fbe1be4a4de8663db90dc040e40ef8754b44fd9a44ba
font_00_sfnt_off00013c01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C01 6744 bytes
SHA-256: 048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4
font_01_sfnt_off00014ce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CE6 5172 bytes
SHA-256: c03622de6d350192336c58f0a5b292ab641f2d901d2152aea13e629eefba4902
font_02_sfnt_off00015e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E64 1640 bytes
SHA-256: e2a8cf3ae90b9a82ebf0add2d91a9d1ec9768ccc63ce40db21e7dac6586adc8c
font_03_sfnt_off000166a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166A1 13568 bytes
SHA-256: f8b1b41e5edc09cd55f96a5e6944a305323c6ce771d40a219d4ed73da325f83c

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