Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df02c37972664d1…

MALICIOUS

PDF

76.3 KB Created: 2021-02-27 01:30:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9a7c937605266c9eed89b9384a6dd3d7 SHA-1: 6f9ddee24d33de52e799482decfaa28997378235 SHA-256: 4df02c37972664d16020d7393bec2093de9f1ae3c7025f179399e5d2edfe8f53
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's likely a phishing or trojan delivery mechanism. It functions as a link farm, containing numerous external URLs pointing to disposable hosting sites, suggesting an attempt to redirect users to malicious content or exploit kits. The document body, though heavily obfuscated, contains references to 'Bragg apple cider vinegar book pdf' and the authoring application, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9577

Heuristics 6

  • 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.
  • 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://soxebez.ru/award?keyword=bragg+apple+cider+vinegar+book+pdf PDF link annotation
    • https://sekokuvujiziv.weebly.com/uploads/1/3/4/0/134096710/likojapawedaz_fonazoxejo_vawewez.pdfIn PDF document text
    • https://febelozo.weebly.com/uploads/1/3/4/5/134599394/zoserusino.pdfIn PDF document text
    • https://cdn.sqhk.co/nanubebebot/cSYjgyJ/dadabolewume.pdfIn PDF document text
    • https://vakenufepuxino.weebly.com/uploads/1/3/4/5/134529081/7053666.pdfIn PDF document text
    • https://cdn.sqhk.co/kizafizutuw/gdhbidL/sniper_elite_4_cheat_engine.pdfIn PDF document text
    • https://cdn.sqhk.co/livefivepa/jbgggff/pixel_gun_3d_mod_apk.pdfIn PDF document text
    • https://wakaxizuso.weebly.com/uploads/1/3/5/3/135322555/61961.pdfIn PDF document text
    • https://kevititexozasen.weebly.com/uploads/1/3/2/7/132712545/xabudinepul-vatajakitisu-mikukuzaw.pdfIn PDF document text
    • https://jinikegubu.weebly.com/uploads/1/3/4/8/134873825/peliz_budonijedoral.pdfIn PDF document text
    • https://tapituxupali.weebly.com/uploads/1/3/1/3/131382330/nipuwevaran.pdfIn PDF document text
    • https://golewobewawir.weebly.com/uploads/1/3/4/3/134350879/riruzemaju-kagaj.pdfIn PDF document text
    • http://newipufisatag.scienceontheweb.net/witanuz.pdfIn PDF document text
    • https://bapixive.weebly.com/uploads/1/3/4/3/134393773/e3a4ac5.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/wHiezHi/4_pics_1_word_5_letters_cards_money.pdfIn PDF document text
    • https://sivavodafewe.weebly.com/uploads/1/3/4/4/134484486/dijewaf-divadofelewet.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
    • http://bivojeda.atwebpages.com/yt_3000_attachments.pdfIn PDF document text
    • http://pidodexogejax.myartsonline.com/braun_series_7_replacement_blades_amazon.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9B 5168 bytes
SHA-256: 203990246f17f68015a1e06b649a4ddcf6407b0e406fa66b123006c3d41e08ca
font_01_sfnt_off0000fc35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC35 10088 bytes
SHA-256: b0972e1925a1de43fb61355ac75df2bdf6a66b9924e7a6663749df64d1446525
font_02_sfnt_off00011ec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC4 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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