Malicious PDF — malware analysis report

Static analysis result for SHA-256 13aa46b55a03623d…

MALICIOUS

PDF

78.2 KB Created: 2021-01-23 19:28:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ea6eecb1bd916d82f1505c1607038bd0 SHA-1: 171821ba0a5247c2d5a8ee071b2cbe71aec72b3c SHA-256: 13aa46b55a03623d7f8d98433cdd1fa442c40ea3908501df11f54413c24348db
214 Risk Score

Malware Insights

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

This PDF file contains numerous links to external websites, including a known malicious redirector at 'traffking.ru'. The document body, though heavily obfuscated, suggests a lure related to '1v1 basketball rules'. The presence of a link farm and a critical heuristic firing for a malicious redirector strongly indicates a phishing or scam attempt designed to lead users to malicious infrastructure.

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
  • 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://traffking.ru/123?utm_term=1v1+basketball+rules In PDF document text
    • https://static.s123-cdn-static.com/uploads/4369648/normal_5fcdfb42f25cc.pdfIn PDF document text
    • https://site-1166725.mozfiles.com/files/1166725/crossfit_masters_training_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484641/normal_5ff159f613d34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490244/normal_5fe4f9799f3b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483610/normal_5ff66b345fe92.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374189/normal_5ff832edb7f00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472788/normal_5fc7afb8a5e3f.pdfIn PDF document text
    • https://site-1178729.mozfiles.com/files/1178729/impressora_bematech_mp_4200_th_driver.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420459/normal_5febb0876f177.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478946/normal_5fef7cc1a7af3.pdfIn PDF document text
    • https://sunowakodi.weebly.com/uploads/1/3/2/8/132814938/2499709.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372721/normal_60074618b1510.pdfIn PDF document text
    • https://cdn.sqhk.co/febenapox/trUicje/los_angeles_county_hair_salon_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/rakapuvad/VVjgqa5/mixanurepirideboguj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486041/normal_5fe9c59759537.pdfIn PDF document text
    • https://mavitebe.weebly.com/uploads/1/3/1/1/131163983/3191316.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382965/normal_5ff2c6648551f.pdfIn PDF document text
    • https://site-1220223.mozfiles.com/files/1220223/47507678521.pdfIn PDF document text
    • https://site-1175480.mozfiles.com/files/1175480/98744414167.pdfIn PDF document text
    • https://megewesaj.weebly.com/uploads/1/3/0/7/130738707/ralivev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405946/normal_5fcace08f3d3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451028/normal_5ff3b95f4c084.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f6ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AE 4900 bytes
SHA-256: c0954c592d3345509a7059fd8ae19b2cf968ee4e458713fb3df2f2e113b54088
font_01_sfnt_off00010770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10770 10548 bytes
SHA-256: 6cb03dbe5f57b059f0499e7e8832ce530653d79a6ef22ec5c8ae3e5a5717b510

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