Malicious PDF — malware analysis report

Static analysis result for SHA-256 21faa964b74e7df8…

MALICIOUS

PDF

80.1 KB Created: 2020-12-17 23:22:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1b56c744b7fe0129b86c17dfccd53cad SHA-1: 78b33ea14bd40ad07a3b9578723f816a8a282317 SHA-256: 21faa964b74e7df83a6c22331af058659a18b3edf3b3656ab47e2304beb841b0
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection mechanism. One embedded URL, 'https://trafffe.ru/123?utm_term=camping+in+spanish+point+co+clare', is likely part of the malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a phishing or malware distribution attempt.

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 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.
  • 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://trafffe.ru/123?utm_term=camping+in+spanish+point+co+clare PDF link annotation
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/puwexomobevuned.pdfIn PDF document text
    • https://tujozidu.weebly.com/uploads/1/3/4/6/134694944/8ece539c10cab7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f86f41ba4974.pdfIn PDF document text
    • https://rizadubarezesul.weebly.com/uploads/1/3/4/4/134499036/7186131.pdfIn PDF document text
    • https://rewuxumo.weebly.com/uploads/1/3/4/5/134586949/076ac14430.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/6011778.pdfIn PDF document text
    • https://furasawi.weebly.com/uploads/1/3/4/3/134308809/5384685.pdfIn PDF document text
    • https://winugemu.weebly.com/uploads/1/3/1/0/131070294/kunelavezogu.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/zenubosul_rutufiso_kumojogopedi_jutatidasofiv.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc54343116eb00e3c68afb8/t/5fc760456beae454316537ad/1606901838170/thoracic_surgeon_education_requirements.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e110403f5353fd95a22f/t/5fc1384fe6d49a06bbbe567a/1606498383857/dd_4e_fillable_power_cards.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a663abffab30daad6594/t/5fd6449f13a48350e80e0af2/1607877794540/guidelines_for_use_of_anticoagulation_in_pregnancy.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0cb33c02f22b9dd4acdc/1606290611489/mary_t_meagher_wiki.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b8b25426f52a30e0d42f/t/5fcc21a2d336b863f0b21dd9/1607213474760/85318444876.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc652a0085bf90c0e221d2d/t/5fd06672fc93c51d16dde4e5/1607493234898/luguxuguwotitijimix.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000e21b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE21B 15692 bytes
SHA-256: 2acda048a2cfd6ad41343b4648883e5c035b0d9ba5b99f51b5866fabf7fd22b1
font_00_sfnt_off0000d072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD072 5252 bytes
SHA-256: ffc0121559f9e8033afb0e8ea0960eff30163c08818af6ce30d241019a75d2ad
font_02_sfnt_off00010ca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA4 11608 bytes
SHA-256: 4ee823970c0c36e0075d2d222ec9bbaba6c3cf29debc2187fbe771921e8c5f9b

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