Malicious PDF — malware analysis report

Static analysis result for SHA-256 074531e4922464d7…

MALICIOUS

PDF

75.0 KB Created: 2020-11-10 07:13:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a772d90c9b7abee287126b02825ef9f0 SHA-1: da7c3c39c91bba6c0ec1e82f576b0b74c558ce6f SHA-256: 074531e4922464d7200b61878202a50879a25fd9597c4aa023f9937dd4cedefb
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/strik?keyword=club+penguin+mission+3+fuse+box PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388283/normal_5f9d0eb935460.pdfIn PDF document text
    • https://terowibew.weebly.com/uploads/1/3/4/3/134370771/e55c93.pdfIn PDF document text
    • https://xikalevu.weebly.com/uploads/1/3/4/3/134319979/9615977.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/xanebavifamopez/21257455537.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/tamano_de_los_planetas.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/kofopibalereneputejo.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/pac-12_football_championship_game_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/plant_cell_project_labeled_on_a_paper_plate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46350699-d99a-42f9-9b94-b2e7659e9fc1/wasubunikulo.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/basic_computer_knowledge_in_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a5aaadc-9c8a-49a7-b48b-957106d38d72/eddie_bauer_xrs_65_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/walmart_mechanicsburg_pa._inventory.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/centroid_of_square_minus_a_quarter_circle.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD351 5192 bytes
SHA-256: be928923606f59a92fdf8a1615f991516f8632c90feabba512dfb740d0b3fb0f
font_01_sfnt_off0000e4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FC 10604 bytes
SHA-256: 9232dfbbc37be9829c293460845024a801b05865e3134d00cd00ee2f5f6c5702
font_02_sfnt_off00010982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10982 16132 bytes
SHA-256: 1dc3e4c0df5ca4cee3a891f28fe896d6b16a951626fb4346f09e4ab97736c5fd

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