Malicious PDF — malware analysis report

Static analysis result for SHA-256 0665eadefca0e4ef…

MALICIOUS

PDF

66.5 KB Created: 2020-12-22 18:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 67c6e7bcc6b558d26ed837f63ae5f779 SHA-1: 7231d67b619d2cff566a3f13b32d76f71a454682 SHA-256: 0665eadefca0e4efe7bb62095defe61ef68641f7d7728e3815e2d53175a7346a
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as a known malicious redirector. The heuristic firings indicate the document is designed to link to external resources, likely for phishing or malware distribution. While no scripts were directly extracted, the nature of the embedded links suggests an attempt to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffmen.ru/strik?utm_term=roman+defensive+walls+in+scotland In PDF document text
    • https://static.s123-cdn-static.com/uploads/4447098/normal_5fca2825cef26.pdfIn PDF document text
    • https://tofejigijo.weebly.com/uploads/1/3/4/3/134312142/3897225.pdfIn PDF document text
    • https://tejivabir.weebly.com/uploads/1/3/4/7/134714352/suwafarazu-kaxamalokumodex.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/pezofut/25462576092.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/zuretobawepilibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51b5f159-9cf1-4f3a-af88-c15f8fc66de9/washing_synthetic_dreads.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/1672668472.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68a4a58a-01de-4e4b-b7ea-fd9349e354b7/zugigonikedaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d78249e-ee30-4724-8a6e-c95241ee8cb7/cool_text_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/3ds_emulator_games_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d69a9a6c-ecae-4f27-bf44-25249a549075/46214119163.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea3843c8-c3ad-4595-89ef-8ec2e1af1796/tropico_de_cancer.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_off0000c99d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC99D 5228 bytes
SHA-256: 73fc6a344c63943b379b901abdcff3e6a425ec96515f73aa7dd4e313f141d849
font_01_sfnt_off0000db73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB73 9860 bytes
SHA-256: 07dd88f360578ce1cf61f645e0eceacef6c4584d4f25d5f76c3257d2c837362d

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