Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b64b43b09295c94…

MALICIOUS

PDF

71.1 KB Created: 2020-12-28 20:50:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 23e4be83b38d55409d3a123b36d61d1c SHA-1: d09cd203bc43481d11bd9209d1abd2349a53614b SHA-256: 0b64b43b09295c94bb71780ce2c69709315e8cfa25a9abfdf716c9b3b8334447
214 Risk Score

Malware Insights

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

The PDF contains numerous links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, appears to contain text related to 'Rolling stone magazine top 100 country songs', likely a lure to disguise the malicious intent. The presence of multiple PDF links and a critical ClamAV detection further supports a malicious classification, likely for phishing or malware distribution.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/strik?utm_term=rolling+stone+magazine+top+100+country+songs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391636/normal_5fb041e9c68d6.pdfIn PDF document text
    • https://lifalaril.weebly.com/uploads/1/3/4/8/134883644/d745662b77bbc0.pdfIn PDF document text
    • https://jabifuvos.weebly.com/uploads/1/3/1/0/131070291/239676.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415935/normal_5fb5e3106b1eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424997/normal_5fa20cf1b65cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412394/normal_5fa6f4c492964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f927b5530f1e.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/vufupu/judefesutelimusumuwigoxem.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/lumexogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a64eb0da-7ada-4139-83f1-fff23a3a6bb9/gobofeterijamibowumof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b3ea0a-1c77-4f89-9ce0-ca4f47362e42/lucky_patcher_madden_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/telugu_new_love_feeling_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa44c073-52ec-44d2-b272-9ed6c9a3fe58/watutakesozobaj.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/pazevuzinuvovaseva.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/sample_safety_incident_report_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f1d4a64-b937-4bc6-b06e-f0c1040a790d/jupajoturudulogos.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_off0000d831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD831 5608 bytes
SHA-256: 9e9f0fb90f33e9f3b574811442045ac30a07b7592e1ab7edd8560f60a0ff47de
font_01_sfnt_off0000eb4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4F 10660 bytes
SHA-256: 6307be0bbf666f3995a4c124166f7beec4c603b7046b0cc1d2067db1a9e2bbe4

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