Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0f381ab3b96a2f…

MALICIOUS

PDF

59.9 KB Created: 2020-11-20 09:01:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 4fe529dc63c0531dc0bebf2619f32eb3 SHA-1: 10ce61e7ef4a08b348bc3c5da5e7cf1ccbd34899 SHA-256: ab0f381ab3b96a2ff60d13043b2063c6459264ca8cc05e65617d4d42da61fb87
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, a common tactic for phishing or redirecting users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of links, suggesting an attempt to create a link farm or distribute traffic. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely related to phishing or serving a secondary payload.

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
  • 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.
  • 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://trafffe.ru/aws?utm_term=visit+card+template PDF link annotation
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/miputow_fabifeleriga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387242/normal_5f9b2fc406167.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454811/normal_5fa6fd0db4330.pdfIn PDF document text
    • https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/robedupuxes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372707/normal_5f8fca38ceed9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371787/normal_5f889302c89bd.pdfIn PDF document text
    • https://zolegezuboz.weebly.com/uploads/1/3/4/4/134462972/wisexumexizaxuturu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387933/normal_5f8ee41442c1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371508/normal_5f89233903fe7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488103/normal_5faab5d06fd51.pdfIn PDF document text
    • https://murepofolod.weebly.com/uploads/1/3/4/4/134480544/ditekagewekiv.pdfIn PDF document text
    • https://variwigegepug.weebly.com/uploads/1/3/4/3/134348450/burazin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375891/normal_5fa267be21814.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/7abb0252-fdea-42bf-8487-ce5ca1fadd10/ballet_arm_positions_vaganova.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_off0000b184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB184 5184 bytes
SHA-256: 198e7c15041aab69947f6845c45b94a25f967322699ecb4616ef190cca3975ff
font_01_sfnt_off0000c30f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC30F 9228 bytes
SHA-256: 6d97edfcdead881c5365b2399b56098f50b7d8942075bdede8dbed4a881ffb8e

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