Malicious PDF — malware analysis report

Static analysis result for SHA-256 025619f670194e3c…

MALICIOUS

PDF

75.7 KB Created: 2020-11-30 18:51:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: fe5c8b38cbd4869c3ae3c3dbda426c43 SHA-1: 07376930fb4a6dfae9bbc93081248a6c444728f0 SHA-256: 025619f670194e3c0fa4f86c5a940bafc5a3ca711e15801dc37bed35cdb4284d
156 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The presence of numerous external links, including a link farm, suggests an attempt to manipulate search engine results or redirect users to malicious sites. While no scripts were directly extracted, the PDF structure and external links are indicative of a phishing or malicious content delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffnew.ru/aws?utm_term=coursera+financial+aid+answers+scribd PDF link annotation
    • https://jizufolikoni.weebly.com/uploads/1/3/4/3/134349493/1097934.pdfIn PDF document text
    • https://tatogupuragafa.weebly.com/uploads/1/3/4/0/134096405/todidawikavasonixop.pdfIn PDF document text
    • https://suvejuxib.weebly.com/uploads/1/3/4/3/134380783/xivagipeligabemikiki.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/59e18c2f1d0bf5.pdfIn PDF document text
    • https://jobozisibipiw.weebly.com/uploads/1/3/4/5/134581899/5f32795.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/kudowo/geological_time_scale_eras.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfc61a97599144ebda172/1606286437065/pebusefarozefeb.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2a1ec917750a3d7d2c6/t/5fc1d515cb3e0f577193476e/1606538517430/vavaxebofinajawujafo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfe5245ca4f7902667367/1606221395097/3885154229.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0d3ae18c5c478ec31c45/1606290746985/britax_marathon_70.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d2f2d26ff1194f734ddd/t/5fc10ee6f8cdb769c60878df/1606487783489/vunenizedilikaregome.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c87788c99b6d37a67a80/t/5fc3f3744f9837572059d86e/1606677364763/lucky_charm_wow_3.3.5.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00a03c6229360eca839ab/t/5fc345e6fa04221c718980fa/1606632934645/49391251012.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/70004035222.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/vopawozizeji.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD10 6588 bytes
SHA-256: fa72874b8c381873b432d3b5cea9ecddba20f04e8e1c9face7d560df1136061a
font_01_sfnt_off0000dd8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8A 5152 bytes
SHA-256: 5a69752bfaa4920ca766a2911a8300d159d07a1affcc7c67e6e4019b78a6b0c2
font_02_sfnt_off0000ef21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF21 2968 bytes
SHA-256: 85b7fb1df5b6f994e3fa8848cd009a58623b3e235f2008e21dc050226b3588a9
font_03_sfnt_off0000fba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA1 10708 bytes
SHA-256: aaa4253b39c26a2cb5e603b1bd1769206ef3f9d7bb1366ff1194b59da8fe00d7

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