Malicious PDF — malware analysis report

Static analysis result for SHA-256 07fec558958d2e98…

MALICIOUS

PDF

74.9 KB Created: 2021-01-21 12:54:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c299fe05d3adeaf7c49e30f9beda83f8 SHA-1: 9d815f05738bb4e4658ef05d24ac77b77dae9e82 SHA-256: 07fec558958d2e9881d5dba4413cd723ae532bface44a8212c54fde47e721b7c
126 Risk Score

Malware Insights

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

This PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, appears to be a lure related to 'Bible verses for healing and strength pdf', likely a pretext to disguise malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/aws?utm_term=bible+verses+for+healing+and+strength+pdf PDF link annotation
    • https://witowufagefalob.weebly.com/uploads/1/3/0/7/130738848/soketo_zefurapegonumuj_fufivavojubuz.pdfIn PDF document text
    • https://cdn.sqhk.co/lebogomatoze/QjciimP/warface_player_tracker.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463552/normal_5fb59b0564f97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409421/normal_5faddaf22f696.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457592/normal_5fed0b9ed7eac.pdfIn PDF document text
    • https://devudupaf.weebly.com/uploads/1/3/4/8/134880603/lesevodifav_tazujepapiwine.pdfIn PDF document text
    • https://site-1180799.mozfiles.com/files/1180799/bengali_movie_protibad_hd.pdfIn PDF document text
    • https://gebawifu.weebly.com/uploads/1/3/1/4/131483167/08f78c819.pdfIn PDF document text
    • https://site-1168349.mozfiles.com/files/1168349/market_garden_shandy.pdfIn PDF document text
    • https://site-1168340.mozfiles.com/files/1168340/25573893518.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5fa0b0f9032cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413109/normal_5fe0fecccdbb5.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/dewazewokib/nuclear_fission_vs._nuclear_fusion_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/astro_a20_firmware.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_off0000e802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE802 5552 bytes
SHA-256: 7f342df2475d19d9efc5168423f8992083cd6693b5cf0063807c3247aeb045fb
font_01_sfnt_off0000fae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE1 10500 bytes
SHA-256: b977631782f9833f85402759438e6fc3829d2abffd452cae71e6b45e91d92aa3

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