Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e5f330649471c2…

MALICIOUS

PDF

74.0 KB Created: 2021-03-19 06:20:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fc5abbdba8143dc364842006154f0dba SHA-1: 80390dd787f9c118854a1cdef332a7beb5ed3810 SHA-256: e8e5f330649471c2babf14822bae782dcca9d8de0cb697a844e53811ff212e99
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution via the linked URLs. No scripts were extracted, but the presence of numerous external links points to a watering hole or phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • 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://resalured.ru/award?keyword=gina+asma+2020+pdf+portugues PDF link annotation
    • https://gofazawadatefit.weebly.com/uploads/1/3/5/3/135349405/c2469292b7a9.pdfIn PDF document text
    • https://lafadulow.weebly.com/uploads/1/3/4/5/134591129/bukem.pdfIn PDF document text
    • https://rulipativix.weebly.com/uploads/1/3/1/6/131607363/fegimuko_pozir.pdfIn PDF document text
    • http://freud.icu/award_certificate_template_word_freedewiv.pdfIn PDF document text
    • https://manujemupofux.weebly.com/uploads/1/3/0/7/130738512/5651048.pdfIn PDF document text
    • https://ximepovefuvaxoj.weebly.com/uploads/1/3/1/8/131856443/66da2fe7379e.pdfIn PDF document text
    • https://ponozivodu.weebly.com/uploads/1/3/0/7/130775347/puxel.pdfIn PDF document text
    • http://e-devletodeme.net/red_cross_first_aid_certification_onlinela1q0.pdfIn PDF document text
    • https://lijowuvum.weebly.com/uploads/1/3/4/6/134624244/1808803.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406168/normal_600302bfca2d4.pdfIn PDF document text
    • https://tedipoji.weebly.com/uploads/1/3/1/4/131408178/5758e22ad.pdfIn PDF document text
    • http://grusha.space/snow_white_princess_miku6zdxp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445125/normal_5ff94263a6c1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417669/normal_5fcbe599981e2.pdfIn PDF document text
    • http://lnstagramverifiedbadge-media.com/high_school_physical_education_lesson_plan_templatee3c1a.pdfIn PDF document text
    • https://fuxiwajusefu.weebly.com/uploads/1/3/4/6/134617271/4b33be02d10accf.pdfIn PDF document text
    • https://jijaxiwiruba.weebly.com/uploads/1/3/5/3/135333012/58352.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_604a241e8b6a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471971/normal_602ae779c00f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1d1066b-4419-41ed-bb3c-fde1ad7af69a/proform_tour_de_france_clc_indoor_cycle_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f04fc732-f00e-484a-81ec-6b87bde4ccff/9103030033.pdfIn PDF document text
    • https://b6c9d0de-81a1-4db9-ab7d-8a95af9e63d6.filesusr.com/ugd/b28ae2_9a246548d66142098240012d727213ea.pdf?index=trueIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_b583187bdc8d42cfaacdf81a50e0d6e5.pdf?index=trueIn PDF document text
    • https://a765b249-d442-4b07-8ea9-8318d996b894.filesusr.com/ugd/902d29_8b7de725d7c94d75aa4b7049353a39d1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e78955ba-f9c5-4cc2-9351-1acf13dd665c/insinkerator_evolution_select_plus_vs_essential.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_off0000ddd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD3 5636 bytes
SHA-256: 62dea6daeca288a97cc58fa3d95c43532a1263da99856111fb258768951b78c8
font_01_sfnt_off0000f0ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EA 13344 bytes
SHA-256: f129d21224ca95e4f62cc6b7ff344079fd43317e5463208ed4f5606b41e4e659