Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e1a394eba4d6a6b…

MALICIOUS

PDF

96.0 KB Created: 2021-02-21 20:00:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b7a6420035a1bff451941da9de839487 SHA-1: 7c5c14eab606f0f62ee40d01ccff99f940aa50db SHA-256: 1e1a394eba4d6a6b22aac40934f157d51eb0b67d4f86ec18187040db5c44130b
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure, likely attempting to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://baarspo.ru/wix?keyword=cockapoo+puppies+for+sale+in+roanoke+va PDF link annotation
    • http://susurrus.space/galaxy_wallpaper_computerpk141.pdfIn PDF document text
    • http://fumufede.iblogger.org/sipenitotajojoxopi.pdfIn PDF document text
    • http://verification-help.business/jaxedeobjox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379485/normal_6022f70eda205.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/gOAgwjd/japanese_appear_translation.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370278/normal_60245b5c8271f.pdfIn PDF document text
    • http://item-mask.top/88707685475wwf6v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415321/normal_603068e3d67fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387929/normal_5fe37017c5bb6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468837/normal_5fe0ef4897038.pdfIn PDF document text
    • http://lojasamericanasbr.com/who_was_the_first_martyr_to_be_killed7cfbf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413842/normal_60034d8313831.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416150/normal_5ff578f143603.pdfIn PDF document text
    • https://cdn.sqhk.co/lisesemafo/ijZHied/ketawirimewewolujowus.pdfIn PDF document text
    • http://maewallace.com/zelelozitabuzipojiregiffmcu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379054/normal_600edcf6edbd7.pdfIn PDF document text
    • http://trokot-newshop.online/7656641726ktd88.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/LQbhhbk/hallmark_movies_now_xfinity.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuzigup/jbhhfGK/nejabolemuxovalomanonagef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413118/normal_5fe50cd93948e.pdfIn PDF document text
    • http://roxobupupop.22web.org/helplessly_song_pagalworld.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406516/normal_5fdbfea182f67.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://nodikisiti.rf.gd/neet_2019_answer_key_aakash_institute.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012e37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E37 4956 bytes
SHA-256: ff6e581556bd6668c18eb3ce2b353c0d4ead8d0323f21ca2fb423a473982cd50
font_01_sfnt_off00013f23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F23 10792 bytes
SHA-256: 10b85565b8287bccd56b2d3e0d0ec759bf010ef6b1f105dfc5058d2f61cbef38
font_02_sfnt_off000163df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x163DF 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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