Malicious PDF — malware analysis report

Static analysis result for SHA-256 76928931df01ab53…

MALICIOUS

PDF

67.0 KB Created: 2021-02-28 02:00:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 94aa950ad0f058d6700deaff89cb7e9d SHA-1: 7f4d9f3acb10b8bc58f8d4a62b60feb4f3418ace SHA-256: 76928931df01ab53952c96e3c9d650302ff93025fa970fd6a98e9cb8a39dc3e5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many of which are disguised as document titles, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier strongly indicate maliciousness. The document body, though heavily obfuscated, contains a lure related to puppies for sale, directing users to a URL that likely hosts a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/strik?utm_term=miniature+dapple+dachshund+puppies+for+sale+cape+town PDF link annotation
    • http://look-hotel.com/accounting_principles_9th_edition_solutionshpsnm.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/ijifha8/sefoj.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/hfiefMS/malakorowokowujawisijej.pdfIn PDF document text
    • https://cdn.sqhk.co/murafabu/ai5Ihe5/28036782338.pdfIn PDF document text
    • http://ketosimple.online/showbox_android_apk_latest_versionsq5si.pdfIn PDF document text
    • http://13millions.store/best_resume_format_for_freshers_download46tr9.pdfIn PDF document text
    • https://cdn.sqhk.co/rokajoten/Wgdjhij/xewer.pdfIn PDF document text
    • https://dasezakam.weebly.com/uploads/1/3/4/8/134883145/guxozorix.pdfIn PDF document text
    • https://cdn.sqhk.co/gemesikexo/a8RhhJW/futofojox.pdfIn PDF document text
    • https://cdn.sqhk.co/velizovatim/jmWVhia/85936216822.pdfIn PDF document text
    • https://cdn.sqhk.co/kugorazig/z7ggbCJ/best_unlimited_free_vpn_for_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/kejofuvata/dSPAjfr/rexazitadipujorakorijutox.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/frLu0ij/planets_in_the_solar_system_smallest_to_largest.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/hallelujah_piano_sheet_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/rockstar_gta_v_report.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8D5 5340 bytes
SHA-256: cd6a9ff0787c25cc61ef76f3d321afa7bc044d50c7bf9d34df9f29531e2e791b
font_01_sfnt_off0000db14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB14 10452 bytes
SHA-256: 01d08a72520055033f7beb7a675dd78985e68d1e42925f11fe60d2699a819c7a

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