Malicious PDF — malware analysis report

Static analysis result for SHA-256 02c7c8ceb4bca0dc…

MALICIOUS

PDF

81.9 KB Created: 2021-03-25 02:37:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: a9d1194886b1dc539793fdc14b969375 SHA-1: 46dbc75763f2fc1d12e23494f31d6a59a05b2d64 SHA-256: 02c7c8ceb4bca0dc37af3cb775a415571abe9638dce20a04d7e13dcb01e656fe
186 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a significant number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' strongly indicate this document's purpose is to drive traffic to external sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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 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://maypoin.ru/award?keyword=carmine+gallo+five+stars+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4505687/normal_5fc89d4b28337.pdfIn PDF document text
    • https://cdn.sqhk.co/nojumuku/d2DH3ib/pixel_battle_royale_unblocked_weebly.pdfIn PDF document text
    • https://cdn.sqhk.co/rolidazi/bfIfBjf/38921065455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463286/normal_604a5fc0a9736.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizilo/hd9jbgf/real_vs_fake_airpods_pro_box.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488592/normal_60224bfd9ff44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463810/normal_6047027c29bf8.pdfIn PDF document text
    • https://cdn.sqhk.co/sijaxovada/0gijhi8/biggest_seesaw_world_record.pdfIn PDF document text
    • http://niveranat.iblogger.org/73370107208.pdfIn PDF document text
    • http://difavusimope.iblogger.org/minority_report_full_cast.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481831/normal_605bc3824d653.pdfIn PDF document text
    • http://zuzezolimo.22web.org/chemical_names_and_formulas_download.pdfIn PDF document text
    • https://xapitutas.weebly.com/uploads/1/3/0/8/130813648/boxafuju.pdfIn PDF document text
    • https://cdn.sqhk.co/sivunukiwe/aNhfGgh/veletomisepinasoz.pdfIn PDF document text
    • http://revinatapujenaj.iblogger.org/49626422946.pdfIn PDF document text
    • https://tajezutudod.weebly.com/uploads/1/3/1/3/131398094/5106072.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://nozafawuronixe.epizy.com/rucka_rucka_ali_songs.pdfIn PDF document text
    • http://bileperiwuxi.epizy.com/natal_birth_chart_compatibility_report.pdfIn PDF document text
    • http://zikefekumir.epizy.com/38484482512.pdfIn PDF document text
    • http://fufabufitilaf.epizy.com/ann_marie_unlove_you.pdfIn PDF document text
    • http://relikebatusexud.rf.gd/vujizamabigot.pdfIn PDF document text
    • http://nisebot.epizy.com/50944488805.pdfIn PDF document text
    • http://wemefozes.rf.gd/google_chrome_windows_10.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f29f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29F 5232 bytes
SHA-256: 2dd7c599f87591f9385198c728cac721d7a772da539ddf186e9cead9a30125e4
font_01_sfnt_off00010463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10463 11240 bytes
SHA-256: 090c2028d957c16904eae61f8d4766f98cfd821f95b4dea1944d207da3ee7f0f
font_02_sfnt_off00012a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A88 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378