Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d52b6a682cd4999…

MALICIOUS

PDF

61.6 KB Created: 2020-12-18 18:01:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2da857ecf1520caedcd691046ce7c54 SHA-1: 59ca03abc059f13ba23c1ef5bbf738dccad71fc6 SHA-256: 1d52b6a682cd499915a29c5cbf4012f32e5e787ff26d0ac6e4c400cae2f71460
156 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm of external PDFs and a primary URL disguised as a "Cat genie owners manual", suggesting a phishing or redirection scheme. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/strik?utm_term=cat+genie+owners+manual
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/738ce92503e6c.pdf
    • https://gugabezari.weebly.com/uploads/1/3/4/5/134577353/sejetolure-rimifi-satufivimokolav-tavaninez.pdf
    • https://dupizonax.weebly.com/uploads/1/3/1/3/131380343/a4edec3441a701c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/geraromu/ahad_nama_in_english.pdf
    • https://uploads.strikinglycdn.com/files/4b269c1d-2c17-4dc3-a4bc-4a69f7dcd2fb/line_6_g10_manual.pdf
    • https://s3.amazonaws.com/tinajabizoreguf/bissell_cleanview_vacuum_cleaner_manual.pdf
    • https://uploads.strikinglycdn.com/files/af92e30e-886b-433c-ba3d-20dab5a9ad0b/fisubekagexi.pdf
    • https://s3.amazonaws.com/petuzutemixuvod/gta_5_manual_transmission_ps4.pdf
    • https://s3.amazonaws.com/wogikokuzotaxa/8678759621.pdf
    • https://s3.amazonaws.com/mubemutolewe/importance_of_personal_hygiene_in_food_safety.pdf
    • https://s3.amazonaws.com/nuvukivaxiren/kekedopavepagezifani.pdf
    • https://s3.amazonaws.com/jadudusujuje/gastric_distention_causes.pdf
    • https://s3.amazonaws.com/vatosolikijike/filmywap_punjabi_movies_2018_hd.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3f7.bin
6cbe7fc96d8053e079994385096d5827241a8380e152bb9a9b867c1dc2bf1dc7
pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F7 5004 bytes
font_01_sfnt_off0000c4f5.bin
1e45c9e0026f2d26fc3738b10445834443cc783d22f01efe8de19bc4a991fe76
pdf-font-stream PDF embedded font (sfnt) at offset 0xC4F5 10836 bytes