Malicious PDF — malware analysis report

Static analysis result for SHA-256 47347ebee7bf306b…

MALICIOUS

PDF

75.0 KB Created: 2021-03-01 21:31:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 51078703af4f61d190ad3a36b0dc345f SHA-1: bb17b9cd60299cd38e0e1124f68662e55335432a SHA-256: 47347ebee7bf306b3f9ad8111d6f31abfef3397f02020511bffb12679ec21f30
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, indicating it is part of a link farm. The document body, though heavily obfuscated, appears to be a lure related to medical information, likely to trick users into clicking on the malicious links. The presence of numerous external URIs and the ML classifier's high confidence score strongly suggest a phishing or redirection campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/strik?utm_term=what+medication+is+good+for+cellulitis PDF link annotation
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/4821102.pdfIn PDF document text
    • https://wezoduvum.weebly.com/uploads/1/3/4/0/134096245/7145054.pdfIn PDF document text
    • https://sugevemaketajes.weebly.com/uploads/1/3/4/8/134873201/e88f58b6.pdfIn PDF document text
    • https://napokepuwaju.weebly.com/uploads/1/3/1/1/131164128/6a341a6.pdfIn PDF document text
    • https://mitivowa.weebly.com/uploads/1/3/1/6/131607237/sivunedutufegimazita.pdfIn PDF document text
    • https://dulipitigisol.weebly.com/uploads/1/3/4/7/134717891/6982288.pdfIn PDF document text
    • https://cdn.sqhk.co/voxobidivel/Bjjidgj/airplane_mode_movie_2020_netflix_trailer.pdfIn PDF document text
    • https://volifutizur.weebly.com/uploads/1/3/4/6/134602954/0026abdd4eec.pdfIn PDF document text
    • https://motawifuliwax.weebly.com/uploads/1/3/3/9/133999363/vuxubitoz.pdfIn PDF document text
    • https://vewuwoxefi.weebly.com/uploads/1/3/1/3/131379256/zepalijoj_wawiwa_kavuwolob.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/njbiX50/vatotol.pdfIn PDF document text
    • https://vifoxofanope.weebly.com/uploads/1/3/4/6/134670603/7669925.pdfIn PDF document text
    • https://nidewusojob.weebly.com/uploads/1/3/1/4/131438556/xegadovofunuri-mokubosiziji-kugidanunuda.pdfIn PDF document text
    • https://nijuvijoz.weebly.com/uploads/1/3/1/4/131408832/xifokuf-fudot-jezozo.pdfIn PDF document text
    • https://cdn.sqhk.co/zutujodara/ejjKyER/zed_zombies_2_cast.pdfIn PDF document text
    • https://mutabezikubi.weebly.com/uploads/1/3/4/7/134739743/xefusenapisomewixaga.pdfIn PDF document text
    • https://notesorujul.weebly.com/uploads/1/3/1/4/131407176/8954087.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/muvazi/movokevun.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/avision_button_manager_v1.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e73b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73B 5448 bytes
SHA-256: d1113eac82005af6765d6e65236b20d1957c002d2f580f8d807db5fb1db9d469
font_01_sfnt_off0000f9a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A2 10804 bytes
SHA-256: ace05d8c30c1b8868aa018b911878f26b30fed834604db106c4fd7c434cfc946

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