Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d6e61103cb576e…

MALICIOUS

PDF

86.4 KB Created: 2021-02-23 00:23:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 3213f4788124ba3a7813b26c3a6e5a36 SHA-1: 16a99f097f6011834be88e9ea0f91b7e67430f3c SHA-256: 96d6e61103cb576e92edc8458e84b7136ae1b68c35a4a600348a4e8b064c4fe8
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to numerous external websites, many of which are hosted on disposable domains. The document body, though heavily obfuscated, contains text related to 'why the fed should be abolished', suggesting a potential lure or distraction.

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 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://bologen.ru/123?utm_term=why+the+fed+should+be+abolished PDF link annotation
    • https://naxosetoj.weebly.com/uploads/1/3/0/7/130775404/fudemejovojufutinufa.pdfIn PDF document text
    • http://yellownatural.space/assentamento_rural_e_reforma_agrariarme7t.pdfIn PDF document text
    • http://ceter.xyz/muzoxubiqcz50.pdfIn PDF document text
    • http://italywom.space/transformers_age_of_extinction_putlockerqk449.pdfIn PDF document text
    • http://findfreegirl.com/android_whatsapp_notification_iphonewc256.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471704/normal_6012ea4f3281a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371508/normal_5fe28fbb05a05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386076/normal_600d274f97054.pdfIn PDF document text
    • http://eagleaff.com/64173943133htzdj.pdfIn PDF document text
    • http://cardio-natural.info/85934155704to9p8.pdfIn PDF document text
    • http://imedo.ru/equivalentes_de_gramos_a_cucharadaslm718.pdfIn PDF document text
    • https://xenolato.weebly.com/uploads/1/3/4/8/134868471/gateg_lafugepi.pdfIn PDF document text
    • http://wiinorama.space/susibawopuvozudomelospkwlc.pdfIn PDF document text
    • https://moxuronanupew.weebly.com/uploads/1/3/4/5/134597487/budavijiritofe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384030/normal_6033d6fc8eedd.pdfIn PDF document text
    • https://zisamezasebav.weebly.com/uploads/1/3/3/9/133997726/f7a884a70c9.pdfIn PDF document text
    • http://amaryllis.space/77284197539kbjb9.pdfIn PDF document text
    • http://sexesex.site/carboxylic_acid_and_alcohol_to_form_esterebr95.pdfIn PDF document text
    • http://presente-top.store/41171942515lo5ng.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
    • https://s3.amazonaws.com/pululusodogi/9443369449.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_off000107df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DF 4932 bytes
SHA-256: 52bd00941505c57921bfecbd1fbc3d0e07b7ddfb3506a2a084c2ca1c58cf9500
font_01_sfnt_off000118c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118C4 10848 bytes
SHA-256: 55ff33412c0fcc48ce4d8a4209d5734e20990f19e52bdac553ed3904290f4315
font_02_sfnt_off00013de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DE2 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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