Malicious PDF — malware analysis report

Static analysis result for SHA-256 68456af4322bf72d…

MALICIOUS

PDF

92.3 KB Created: 2021-01-01 09:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: bffe5457523c3b82d3d412148de8908c SHA-1: 70e16e5da9aa2c331f26936a276120d757dcc573 SHA-256: 68456af4322bf72d64282c7eff7e22b77bc51bacdbfbd379b1604c9b7c7f3701
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a free game development course. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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/strik?utm_term=game+development+courses+free In PDF document text
    • https://static.s123-cdn-static.com/uploads/4408853/normal_5fc9608ee65ec.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzomorikat/Mjegeub/jokakom.pdfIn PDF document text
    • https://neluposu.weebly.com/uploads/1/3/4/3/134369170/7445179.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386839/normal_5fde0b8bb91f3.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/beparinunij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369632/normal_5fe6b2bac1495.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409258/normal_5fbef9a9bfaf4.pdfIn PDF document text
    • https://mamufitixiru.weebly.com/uploads/1/3/4/6/134640278/buzoz-xejakitutugol-datikag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453907/normal_5fd2c4cb571c6.pdfIn PDF document text
    • https://cdn.sqhk.co/fudixaxogub/hcicgpF/megan_fox_news_girl.pdfIn PDF document text
    • https://cdn.sqhk.co/doxowite/7rigeTe/vox_cinema_abu_dhabi_yas_mall_movies.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf6d8889-f5eb-4807-bf5b-53f51908d743/robot_superhero_champions_mod_apk_1._0._50.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_off00012d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D8F 5392 bytes
SHA-256: 741b5afa9d8f062def6e1c8c0765b2115dc4884d70a26186b05fc0df8ac38e73
font_01_sfnt_off00013fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FD7 10796 bytes
SHA-256: 2479618ce974d3ea76fc0b56d2e754a965c88d5510c68033988bab68a0887049