Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec6ec8ddf25697a…

MALICIOUS

PDF

69.1 KB Created: 2021-01-09 21:45:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: fafdd801c808a084f4e8de1874d78bb2 SHA-1: a4a174e447304b3ff0b54c554637e6542ebcc129 SHA-256: eec6ec8ddf25697ada23cf6051897927b508d9a89297daa2a4f1e1d64451c6f9
244 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious websites, masquerading as an 'My airtel login' page. Heuristics indicate it's a malicious redirector and a link farm on disposable hosting. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit users through phishing or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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://gettraff.ru/wb?keyword=my%20airtel%20login In PDF document text
    • https://miwolugakibu.weebly.com/uploads/1/3/1/3/131383652/8394b7c76979.pdfIn PDF document text
    • https://waretufiwad.weebly.com/uploads/1/3/4/5/134581883/3789811.pdfIn PDF document text
    • https://ziralupaw.weebly.com/uploads/1/3/1/3/131379221/6145619.pdfIn PDF document text
    • https://jedifubebevaze.weebly.com/uploads/1/3/4/8/134873515/4817272.pdfIn PDF document text
    • https://gafanotode.weebly.com/uploads/1/3/4/5/134576189/eca73ff4452.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369501/normal_5fcb2c2822d74.pdfIn PDF document text
    • https://derugipuze.weebly.com/uploads/1/3/0/8/130814861/643a95f3.pdfIn PDF document text
    • https://zawasofolebu.weebly.com/uploads/1/3/4/9/134902788/587203.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/wotareropajewub.pdfIn PDF document text
    • https://xonajababivoxo.weebly.com/uploads/1/3/4/0/134040492/c86b9.pdfIn PDF document text
    • https://foxazejepanobo.weebly.com/uploads/1/3/1/6/131637169/3db92a50a4fc0b.pdfIn PDF document text
    • https://givadebar.weebly.com/uploads/1/3/1/4/131437750/lafobokojagimedunos.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
    • https://s3.amazonaws.com/jowutoneranemuk/nupetukenutiwowegoji.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/worksheets_for_esl_beginners.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC506 4568 bytes
SHA-256: 95b3ce207c0dca28e95907d9e67128d6dab8d119b305e0da0df404e8c2e25446
font_01_sfnt_off0000d49f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49F 10840 bytes
SHA-256: 69caeb83a9628ad9712bd242dfbcf2c05e11c9da5eb5ca216f1e9772faafaacf
font_02_sfnt_off0000f9e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E1 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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