Malicious PDF — malware analysis report

Static analysis result for SHA-256 dafeb3fa223a6723…

MALICIOUS

PDF

83.4 KB Created: 2020-12-19 11:33:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: cf8ad3b6db6ab320565b113110ca0f34 SHA-1: 77eda85506bfd0f09717e8d60343f5fac5b23965 SHA-256: dafeb3fa223a672346fefaae42189637dd4b38c03cf97cede990f4d6b0e1e268
156 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_SEO_LINK_FARM, indicating a large number of external links, with one prominent URL pointing to a suspicious domain. ClamAV and an ML classifier also flagged the file as malicious, specifically as a phishing trojan. The embedded URL suggests an attempt to redirect users to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafficel.ru/strik?utm_term=coran+pdf+arabe+telecharger PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4372087/normal_5fd0736c074fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485821/normal_5fc65cbb41f26.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/mosunidedagot.pdfIn PDF document text
    • https://viwizabodug.weebly.com/uploads/1/3/4/5/134509287/d0133b4a56a8.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/vunizi/13417804981.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/free_printable_envelope_address_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/bahubali_2_songs_kuttyweb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26315bf1-e0f3-47bc-b614-396ebce60c5f/cherry_chem_strain.pdfIn PDF document text
    • https://s3.amazonaws.com/giwurode/saxorekurepujaresa.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/list_of_adjectives_synonyms_and_antonyms.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/zelupupagoga.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00010de8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10DE8 28108 bytes
SHA-256: 0dc2732b2b102b890f35790a2c01257042b0bfdb61886a734de217ea7c776456
font_00_sfnt_off0000ca2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2D 3012 bytes
SHA-256: 1f704321da6c9533394e3daca62f4c9b2d8e087e2f11655debdc550516026f40
font_01_sfnt_off0000d4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F5 5284 bytes
SHA-256: 76165816ced303877843fedfef36557f719836d4d2229293c8dee495580bbc8b
font_02_sfnt_off0000e6e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E3 11528 bytes
SHA-256: 1e1a15c9688113d025276794cf42350290707f26db571b751b7d199013b3bf42

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