Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d753ae80f01e53d…

MALICIOUS

PDF

72.8 KB Created: 2021-02-17 15:46:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c19affc8cd30d7a72f951f57b6987287 SHA-1: 56b690d82cf577d80fa19a326f3e23c964c33b3d SHA-256: 1d753ae80f01e53d95b7829364839386f2fec7131d4f5e19978a90c726b91a9c
186 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 a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO manipulation tactic. One of the extracted URLs, https://seumenha.ru/wix?keyword=jimmy+carter+middle+school+rating, appears to be a primary lure. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=jimmy+carter+middle+school+rating PDF link annotation
    • https://cdn.sqhk.co/sejejajoxej/gRghYFQ/bts_dynamite_mv_views_live_count.pdfIn PDF document text
    • http://tb-films.ru/xipowaxuzewud97nwx.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/hghJ3hf/epic_seven_myanimelist.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/W1SPMNQ/new_soap_cutting_slicing_asmr_function.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/fAHxhcV/air_dribbling_field_hockey_rules.pdfIn PDF document text
    • https://jategolotigani.weebly.com/uploads/1/3/4/8/134882723/gerimo.pdfIn PDF document text
    • http://reduslim-ordina.site/red_bumps_on_dog_chin2khsz.pdfIn PDF document text
    • https://cdn.sqhk.co/fakosopalo/Mlgfwhd/2020_farm_program_calculator.pdfIn PDF document text
    • https://cdn.sqhk.co/towinomer/fs7hjha/71726700505.pdfIn PDF document text
    • http://fb-copyright-help-from.com/ben_ten_alien_force_apk74hq1.pdfIn PDF document text
    • http://richmaya.site/fokisapite859.pdfIn PDF document text
    • https://sokasabakowupop.weebly.com/uploads/1/3/4/0/134012989/4515864.pdfIn PDF document text
    • https://cdn.sqhk.co/vezubusevof/iihdZj1/merufofawamelafu.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/GZihAji/silajobonegejenekarenitu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/calendar_2020_template_cdr.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/sinigukujef.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/serik.pdfIn PDF document text
    • http://mudiwedazefuveg.rf.gd/silsila_ye_chahat_ka_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/format_html_code_in_visual_studio_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/43280755052.pdfIn PDF document text
    • http://zovaner.rf.gd/anaesthesia_machine_parts.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_off0000e044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE044 5444 bytes
SHA-256: 70df8c957a135a50c85be1342f0125887acc103e18e38ad51b05f46f26b830bd
font_01_sfnt_off0000f2a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A3 10280 bytes
SHA-256: 7be522045e5ddbcc2215e9fcce53cd9a9820830788ff44f06a00d5517a740b9b

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