Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d098a1065b3dbbe…

MALICIOUS

PDF

71.6 KB Created: 2021-06-01 04:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0750fd3112456c345602ef43ae13f3bb SHA-1: cdb9fccfee8e0eb9c454e2c1e29b1540614e4318 SHA-256: 1d098a1065b3dbbe19609e5883759f14a09aaf940a6c190cc4fbcc3b91cce2ef
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. The primary URL, https://catamma.ru/pbw?utm_term=dante+gebel+wiki, is likely part of a phishing or scam operation, disguised as informational content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://catamma.ru/pbw?utm_term=dante+gebel+wiki PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4471091/normal_5febea0f16577.pdfIn PDF document text
    • https://kopusitubo.weebly.com/uploads/1/3/4/6/134698796/tatuxonozamalija.pdfIn PDF document text
    • https://jutewalezozapon.weebly.com/uploads/1/3/4/0/134016751/tafas-kejajofodabisaz-fiwomesofi-xonuwadevib.pdfIn PDF document text
    • https://fuvipizewovotat.weebly.com/uploads/1/3/1/0/131069886/dc073ec25d7b.pdfIn PDF document text
    • https://noladetexe.weebly.com/uploads/1/3/5/3/135326196/89eecef3.pdfIn PDF document text
    • https://lerorenoj.weebly.com/uploads/1/3/5/3/135390996/ce68f.pdfIn PDF document text
    • https://jugovufepejeja.weebly.com/uploads/1/3/4/6/134611134/memojegag.pdfIn PDF document text
    • https://duvujisukodat.weebly.com/uploads/1/3/4/6/134674851/sugorabule-wetopek-dudutuw.pdfIn PDF document text
    • https://jagedebake.weebly.com/uploads/1/3/0/7/130738918/9c001b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488804/normal_602148cbc7a83.pdfIn PDF document text
    • https://pomonomiwubexi.weebly.com/uploads/1/3/2/3/132302815/pofevanet_tokemojev_tevutesatadukex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuvevetub.pbworks.com/f/why_is_my_liftmaster_not_working.pdfIn PDF document text
    • http://vadibun.pbworks.com/w/file/fetch/144438072/internet_of_things_a_hands-on_approach_book_download.pdfIn PDF document text
    • http://ziduzobif.pbworks.com/w/file/fetch/144436347/twilight_saga_2008_tamil_dubbed_movie_download_tamilrockers.pdfIn PDF document text
    • http://risoxef.pbworks.com/w/file/fetch/144436755/who_compiled_nalayira_divya_prabandham.pdfIn PDF document text
    • http://niwomif.pbworks.com/w/file/fetch/144428781/why_does_my_dog_look_at_nothing.pdfIn PDF document text
    • http://xetibubib.pbworks.com/f/como_poner_trucos_en_gta_san_andreas_para_android.pdfIn PDF document text
    • http://fevosezew.pbworks.com/w/file/fetch/144440013/xovolezodebaxekup.pdfIn PDF document text
    • http://gazumadu.pbworks.com/f/dulugabavobilesamum.pdfIn PDF document text
    • http://xovelezid.pbworks.com/w/file/fetch/144416310/88470919142.pdfIn PDF document text
    • http://kiletejude.pbworks.com/w/file/fetch/144412491/how_to_reset_tommee_tippee_perfect_prep_day_and_night.pdfIn PDF document text
    • http://lakebimutep.pbworks.com/w/file/fetch/144420933/.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_off0000db6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6C 4876 bytes
SHA-256: d6484b4118d2e2ec522f6a32d46d86d346dd59aa8bf484b65b64f39872f1f84e
font_01_sfnt_off0000ec37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC37 11068 bytes
SHA-256: df244bd12b70bd0b682971ed74962adeab115bb4e956dca300d67316227ce687