Malicious PDF — malware analysis report

Static analysis result for SHA-256 df2994fd4ba4947d…

MALICIOUS

PDF

66.3 KB Created: 2021-06-09 18:35:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ad008565c3dc8bafb55c66a9591eb161 SHA-1: fba5832d16fb9348114eaf5019ccff746aa80711 SHA-256: df2994fd4ba4947d830579d9d19e74100b6d901733afdbc16c92f7deb9fff90d
184 Risk Score
Tags
free-cdn-ebook-manual-lure

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 hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, possibly indicating its origin or purpose as a lure. No scripts were extracted, but the presence of numerous external links points towards a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9263

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.
  • 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
  • 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://garglob.ru/pbw?utm_term=combining+docs+into+one+pdf PDF link annotation
    • https://tojuxumisadef.weebly.com/uploads/1/3/4/7/134714483/revaxobumamatovuke.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4467612/normal_60b0ce7ff09f1.pdfIn PDF document text
    • https://luxovifawus.weebly.com/uploads/1/3/4/3/134341193/2833791ab8930.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371246/normal_602822a245d1f.pdfIn PDF document text
    • https://navijaxilof.weebly.com/uploads/1/3/2/6/132696044/fexewijupibodolibaku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_60c0c89f47600.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420608/normal_5ffde5c08d42c.pdfIn PDF document text
    • https://volifinidolil.weebly.com/uploads/1/3/0/8/130873876/a1b99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465392/normal_60bd70ff8b874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446499/normal_5fd89355e93ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469353/normal_602b23abf2525.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366382/normal_603d1060480cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488804/normal_6045143897d17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374857/normal_60139408796b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370264/normal_5fce8341414cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463792/normal_6049f1dabfae0.pdfIn PDF document text
    • https://rixadoliwuri.weebly.com/uploads/1/3/1/4/131437780/106faf9cc0a14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418180/normal_5fd67eb90e351.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e9ec62a-df2c-449d-9672-fe5fd784f31c/actiontec_f2250_modem_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c98631a-d51e-4134-8a8c-83859668ab58/what_happened_at_the_end_of_the_story_the_veldt.pdfIn PDF document text
    • http://sajateves.pbworks.com/f/what_caliph_ruled_the_abbasid_dynasty_and_was_famous_for_supporting_art_and_science.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d8a10b-cb14-4dae-a24d-062a6a6a1491/graphing_absolute_value_functions_worksheet_algebra_2_answer_key.pdfIn PDF document text
    • http://doxawadar.pbworks.com/w/file/fetch/144529485/73000175206.pdfIn PDF document text
    • http://wimarolos.pbworks.com/f/74005197110.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17A 5180 bytes
SHA-256: 314666229f361ad623d8e6a4be3109cc14789cd56eda0518f71ab6cbf464989a

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