Malicious PDF — malware analysis report

Static analysis result for SHA-256 07842ce2d6c8dbde…

MALICIOUS

PDF

74.6 KB Created: 2021-01-08 13:39:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: b09e4d7bc295f3a317eb057f754617d0 SHA-1: 9f381be10cf4b6ef2b567a34b169d79e9129fba1 SHA-256: 07842ce2d6c8dbde7702bdf356ab088e4148cc2cdf449549b5353f1283e943ee
214 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with at least one identified as a malicious redirector. The heuristic firings indicate it's a malicious redirector and part of a link farm, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

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://gettraff.ru/aws?utm_term=wrong+turn+7+full+movie+2019 In PDF document text
    • https://vunesexub.weebly.com/uploads/1/3/4/4/134442538/f08edf48f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/18084334749.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/free_samples_male_enhancement_pills.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/logic_games_for_dummies.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/wafofibeli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2406e81d-0f6c-4a2f-8744-8aaae5fc2268/57678283334.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/12585223465.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/texting_simulator_codes_2020_march.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_off0000e7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EC 5332 bytes
SHA-256: 95e08a5121630675289133b510c1cb97e046c7942e998522c79a14717ab1f096
font_01_sfnt_off0000fa25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA25 10392 bytes
SHA-256: 8aad7c72e75bc4a27dfc719a202d878f1ff51e9d9cd0e0dc547fbb02ce072cd2

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