Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc29380885a8d50…

MALICIOUS

PDF

89.2 KB Created: 2020-12-21 12:58:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 368712ee07e1ac3789e232e002afdecf SHA-1: 1923701979101eab85af79470dc936e48cd6c597 SHA-256: fdc29380885a8d50e50daa5f7124adb51eaddf29c36285503feb87445034960f
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a common tactic for phishing and malware distribution. The embedded URL is disguised with a search query for a modded application, likely to entice users to click. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/strik?utm_term=anime+studio+story+mod+apk+unlimited+everything
    • https://cdn-cms.f-static.net/uploads/4379485/normal_5fd8a19ebb450.pdf
    • https://cdn-cms.f-static.net/uploads/4370746/normal_5fa92cfb878b6.pdf
    • https://cdn-cms.f-static.net/uploads/4403414/normal_5fa9ea17e21ca.pdf
    • https://cdn-cms.f-static.net/uploads/4476577/normal_5fbd9f3238412.pdf
    • https://cdn-cms.f-static.net/uploads/4454965/normal_5fd31489381a7.pdf
    • https://cdn-cms.f-static.net/uploads/4484814/normal_5fb4a1cbba5c7.pdf
    • https://cdn-cms.f-static.net/uploads/4443802/normal_5fb757124c48d.pdf
    • https://www.thesavvyglobetrotter.com/top-7-airlines-flight-tracking-apps-providing-re
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static1.squarespace.com/static/5fe02054c954b22739198289/t/5fe02d4491828d0f5d72062c/1608527174857/sapufasufok.pdf
    • https://uploads.strikinglycdn.com/files/1fb2a11f-084b-41f3-908f-119141d9fdd6/sony_handycam_hdr-cx240_user_manual.pdf
    • https://uploads.strikinglycdn.com/files/23f7873d-5a8c-4e70-a953-cd8764626a60/leon_blanco_africano.pdf
    • https://uploads.strikinglycdn.com/files/ee33d6e5-c4ac-438f-ab9b-ead0297c5993/gw2_weaponsmith_guide.pdf
    • https://uploads.strikinglycdn.com/files/88bad614-e349-4bb2-a584-4574638f64cf/23090805569.pdf
    • https://static1.squarespace.com/static/5fdd44de8580e136cdf53fe3/t/5fde71387f4e6a336720f589/1608413496727/35782328468.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c751.bin
1ab86168d42af09a542ee7928f21952ff000635cf329dfc80c65028d7cba2f58		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC751 15964 bytes
font_01_sfnt_off0000fa39.bin
050ee61b2760aa69da1b08bcaec4199f51d7d41757f274f05c5ba8bae31821f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA39 5468 bytes
font_02_sfnt_off00010caa.bin
d5485effc389b766e7c54295d299c2283a11adc2225b738b627f6456e3d65b4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CAA 11404 bytes
font_03_sfnt_off000133ae.bin
e078578c1cfcc9a8017d423c1475ea794a2d064793281632df071e073def1c8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133AE 16164 bytes
font_04_sfnt_off000148d5.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x148D5 4324 bytes

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