Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf634e7872507cb…

MALICIOUS

PDF

68.0 KB Created: 2021-03-23 00:37:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b72083885e500445f18b0388e7f3e0e4 SHA-1: 2bf3579fa6cd62b0d1b744b4b6367cdc20e23e76 SHA-256: dcf634e7872507cb36e5ad84999fee2e38a8449e94ad3cc3d385f0a2ab22090e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://crophysi.ru/strik?utm_term=stanley+garage+door+service+near+me PDF link annotation
    • https://cdn.sqhk.co/sovokeduseb/61aIShd/gitedepokisawalix.pdfIn PDF document text
    • https://cdn.sqhk.co/mofokamibe/Kgh8phb/suxuba.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/hfflhf2/mabizogazufavaxi.pdfIn PDF document text
    • https://cdn.sqhk.co/tejosepu/ghheghj/23295182469.pdfIn PDF document text
    • https://cdn.sqhk.co/gebemiwisero/ficifnA/zipoxaxutomavij.pdfIn PDF document text
    • https://cdn.sqhk.co/vusabutam/hhXUOjr/robotics_companies_san_francisco_bay_area.pdfIn PDF document text
    • https://cdn.sqhk.co/forexajepusa/WS2oiao/wumanametoz.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/hsTO3WV/arduino_bluetooth_module_hc_06_android.pdfIn PDF document text
    • http://bijepitujutix.sportsontheweb.net/asean_vision_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/rakapuvad/j8jdxja/real_bike_racing_mod_apk_1._0._7.pdfIn PDF document text
    • http://semowatuk.iblogger.org/kexipivogaxuwof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jobifizokugo.rf.gd/caliber_for_android_tablet.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/livexikupemiluwekexi.pdfIn PDF document text
    • http://fufudaloxola.onlinewebshop.net/what_does_toma_una_foto_mean_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/hallelujah_4_part_harmony_sheet_music.pdfIn PDF document text
    • http://kosizomurukiger.rf.gd/69282405371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cbebfea-2491-4a61-8cac-4b7423312e09/how_to_turn_on_walkie_talkie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bf38917-d09a-4a4f-bb94-a6af3d045301/ximufe.pdfIn PDF document text
    • http://tituroxir.rf.gd/artificial_intelligence_programming_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abe9bf63-3894-47f7-9268-9b2170aafc0d/29676249616.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bda7f45-c6bb-457e-825d-68ee78b79f05/fujipulijolusufuguwiliru.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/66575501536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b90b9fb7-afac-461a-a98b-c622593a4af1/59680517330.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB1 5524 bytes
SHA-256: ca5c7fb00e822d2b07e7ad98d577d5fbc608d4d80f167146ce860e10e5136101
font_01_sfnt_off0000dd77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD77 10304 bytes
SHA-256: 42a5a2fe29f4a53b2e519f022f136cfdeceb94b6e75aa97fbea6e4a9b9734543

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