Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcb29ea6690036e0…

MALICIOUS

PDF

76.3 KB Created: 2021-04-01 21:59:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54028561ad3d5ca0256c327cb1a815b7 SHA-1: 7fa29f0f2b2ba52a0cf1b6c428dc346168aff0a8 SHA-256: fcb29ea6690036e01997165f1444b7694b2dbaac9652430e3616704450d2c0fc
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm designed to attract traffic or distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/wix?keyword=all+video+downloader+apk+full
    • https://cdn-cms.f-static.net/uploads/4455886/normal_5fd7181bb0e41.pdf
    • https://potukogigiso.weebly.com/uploads/1/3/1/4/131407148/mijiwuvabagimisiwa.pdf
    • https://static.s123-cdn-static.com/uploads/4385421/normal_6001ede861ba2.pdf
    • https://tovamegudisolos.weebly.com/uploads/1/3/1/4/131411857/3711882.pdf
    • https://pesuzipowezav.weebly.com/uploads/1/3/1/6/131636843/vojideminulenefex.pdf
    • https://pevetuximamit.weebly.com/uploads/1/3/1/6/131606263/804a80c1771cfe.pdf
    • https://cdn-cms.f-static.net/uploads/4464730/normal_5fe7e8823a633.pdf
    • https://static.s123-cdn-static.com/uploads/4418583/normal_5ff7122c76e50.pdf
    • https://dipibuwedaji.weebly.com/uploads/1/3/5/2/135293441/tamoxamaximof.pdf
    • https://ruzamugube.weebly.com/uploads/1/3/4/0/134040566/7eeced4.pdf
    • https://zubusaxomik.weebly.com/uploads/1/3/4/8/134883199/f76a0bb918a2ee9.pdf
    • https://sevenunoxesu.weebly.com/uploads/1/3/4/3/134341304/dukafunexiw-davelunuge.pdf
    • https://zogabimokesowu.weebly.com/uploads/1/3/6/0/136082780/ridabizanifop-buguluxa.pdf
    • https://static.s123-cdn-static.com/uploads/4480408/normal_5fff142224fd3.pdf
    • https://static.s123-cdn-static.com/uploads/4447649/normal_5fef1a1c2f31c.pdf
    • https://pepadamive.weebly.com/uploads/1/3/4/4/134468065/d4807c48eccf.pdf
    • https://savejesala.weebly.com/uploads/1/3/4/6/134668282/32edb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3fab5401-6c9c-4c01-8c94-8c7ee0927fb6/wizuliba.pdf
    • https://uploads.strikinglycdn.com/files/ee4f0a30-8982-4543-adcc-5453c8f6b76d/attack_on_titan_anime_ending.pdf
    • https://uploads.strikinglycdn.com/files/5f813fa7-8266-4554-bf67-b8180eba6bdf/neverending_story_horse_death_real.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eea8.bin
514a5a04d430ef0cf49a3224b83d066159ed5c616fe903895b621e27a9524ac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA8 5060 bytes
font_01_sfnt_off00010008.bin
ef5843fc0ccf40dabd8e1973b72b678107cd5510a10a55246ff0b14aa05b82e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10008 10528 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.