Malicious PDF — malware analysis report

Static analysis result for SHA-256 3295b08c006b80f1…

MALICIOUS

PDF

85.8 KB Created: 2021-01-11 12:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d5b8d6d6573bed3917932b1bb8005f8b SHA-1: 4458f1137ba1e4bd7b4dea94b951455003e47d5a SHA-256: 3295b08c006b80f1fa4da8e0900e7d5f14c78863defe5bfe1b4966f41815dedd
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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.
  • 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://cctraff.ru/aws?utm_term=canteen+wasseypur+songs In PDF document text
    • https://joletumutete.weebly.com/uploads/1/3/4/8/134871701/9299700.pdfIn PDF document text
    • https://cdn.sqhk.co/xugufufifo/jjTiihg/art_history_through_the_ages.pdfIn PDF document text
    • https://defasoxajex.weebly.com/uploads/1/3/1/4/131405962/1888236.pdfIn PDF document text
    • https://cdn.sqhk.co/bojojiweg/bidTkib/the_tiger_s_wife.pdfIn PDF document text
    • https://cdn.sqhk.co/jemajujo/iM8jgjb/local_flavor_deals_coupons_2020.pdfIn PDF document text
    • https://murasujudadalox.weebly.com/uploads/1/3/5/3/135338307/sinawamitiku.pdfIn PDF document text
    • https://fevapeju.weebly.com/uploads/1/3/4/4/134468187/kofatoxas_bikipusu_siwibemi_meguza.pdfIn PDF document text
    • https://gorewexenedi.weebly.com/uploads/1/3/4/5/134585163/5a3f309b8f7b.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/jfhjjaC/tnt_mod_minecraft_free_download.pdfIn PDF document text
    • https://mogudigadoto.weebly.com/uploads/1/3/2/6/132695399/4445328.pdfIn PDF document text
    • https://cdn.sqhk.co/sofetarunox/jhYiibz/digimon_xros_wars_great_x.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/mgggEid/65771456510.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/13712916080.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF052 5004 bytes
SHA-256: c3633e469abd85c15599b423dfd28b6ac6484ef964e644d2e2d4f1a681fec033
font_01_sfnt_off0001017c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017C 10856 bytes
SHA-256: 4914cfe08ced9bb8f4f4e218fda690254b77816c009b51c3ce1b90a426c2b856
font_02_sfnt_off000126d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126D7 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off00013bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BEC 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.