Malicious PDF — malware analysis report

Static analysis result for SHA-256 294940302d37fcdd…

MALICIOUS

PDF

67.7 KB Created: 2021-02-23 19:33:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e1c265d8c155a890b2a3353a3cc68c4d SHA-1: 61848352f1df7a68b8e586336849349b92856f29 SHA-256: 294940302d37fcdd032f42f58a20e471679fe8831e3c802089124a044dd980c1
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, including one pointing to 'seumenha.ru', which is likely part of a phishing or scam campaign. The PDF's structure and embedded links suggest it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/strik?utm_term=aquasource+tub+and+shower+faucet+parts PDF link annotation
    • http://zdorovienashevse.xyz/69135829375ayh00.pdfIn PDF document text
    • http://parkji5x.xyz/1663471838942v9z.pdfIn PDF document text
    • http://tifeguga.22web.org/3131378725.pdfIn PDF document text
    • http://zupinuxuxodu.iblogger.org/8913152161.pdfIn PDF document text
    • https://jipuzalo.weebly.com/uploads/1/3/4/6/134693454/5187951.pdfIn PDF document text
    • https://gegilegaf.weebly.com/uploads/1/3/1/3/131383227/fadukezuwe_lexuku_gawuk.pdfIn PDF document text
    • https://livesagu.weebly.com/uploads/1/3/1/4/131437401/14f0ee958b2c.pdfIn PDF document text
    • http://gexafozo.22web.org/50682939262.pdfIn PDF document text
    • https://mabatuba.weebly.com/uploads/1/3/5/3/135303696/5795598.pdfIn PDF document text
    • http://tobubolixej.iblogger.org/dejame_que_te_cuente_chabuca_limea_letra.pdfIn PDF document text
    • http://pifozuvarivin.22web.org/wojuforo.pdfIn PDF document text
    • http://profer-opt.ru/bts_albums_freeenufq.pdfIn PDF document text
    • http://fokuwezowixo.iblogger.org/simple_disney_piano_sheet_music.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/2046687371590l8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lelekon.epizy.com/shakti_chakra_hd_images.pdfIn PDF document text
    • http://rukateridexak.rf.gd/free_khasi_funny_video.pdfIn PDF document text
    • http://safefimij.epizy.com/string_format_number_2_decimal_places_c.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_off0000c934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC934 5556 bytes
SHA-256: d7a74c66daaeea0cf0084723bbc5d24a90c52fbac22d5d2a9ac6a7062958eb4b
font_01_sfnt_off0000dc27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC27 11076 bytes
SHA-256: e810cab6b36f2ac35505f1622b39c57ba49d810a13460e2ca2874235be47c44e

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