Malicious PDF — malware analysis report

Static analysis result for SHA-256 47fa01f2c619da95…

MALICIOUS

PDF

79.5 KB Created: 2021-02-14 13:15:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 8447ba84d995d843c908df5ffc301605 SHA-1: 3abad51daec11c8cda2d9882aa449680b83dde6d SHA-256: 47fa01f2c619da95ec0478cfb99d9469a7b0909ab34cf0fd8dff46e0f2631f8b
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a deceptive pattern to drive traffic to potentially malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of numerous URLs points towards a phishing or content-luring attack vector, likely initiated via a spearphishing attachment.

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://jacksth.ru/wix?keyword=kim+kardashian+hollywood+mod+apk+hokage242 PDF link annotation
    • http://kompledom.com/asvab_for_dummies_20186soik.pdfIn PDF document text
    • https://giravegide.weebly.com/uploads/1/3/2/6/132681237/dirukavazolunel.pdfIn PDF document text
    • http://dresdenpharma.ru/sezabakudaxeloloxisuzagetj1jq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5fdb6518057b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416930/normal_5fef5ef913d50.pdfIn PDF document text
    • https://bipesulevawitod.weebly.com/uploads/1/3/1/4/131437914/4629065.pdfIn PDF document text
    • http://kernig.online/4526136905164ctm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414156/normal_5ff29cc9d3776.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380705/normal_5fe185f6095f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421639/normal_5fee88a94c67a.pdfIn PDF document text
    • https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/fosujopabixasa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386330/normal_601da07b331e6.pdfIn PDF document text
    • https://cdn.sqhk.co/gexedamej/jijigc9/55166243042.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369656/normal_60014eee9a325.pdfIn PDF document text
    • http://abanca-electronica.com/nunibaparikawejutusekec93wv.pdfIn PDF document text
    • https://mosugomepa.weebly.com/uploads/1/3/4/0/134096926/b017c4ff1ec3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFF 5528 bytes
SHA-256: 523569060ca6f7537bd23614a20b3be28fec30a647f40decfa3bf1935e344bb2
font_01_sfnt_off0000fdbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBB 10648 bytes
SHA-256: 2ed5beee50b01dcecf46c73680c1925deaa4323f09cd5f5e3917017d0154170e
font_02_sfnt_off00012238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12238 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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