Malicious PDF — malware analysis report

Static analysis result for SHA-256 80f7b58ec84484c9…

MALICIOUS

PDF

80.1 KB Created: 2021-04-26 08:07:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4cc1f9c5b1661aba046d341125f1ca05 SHA-1: 70f8c96c2d34a964bbf5195694d1cb12d7354373 SHA-256: 80f7b58ec84484c908daa677c4ffb61afca87a26d4379f859407663fd83e2d35
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or SEO manipulation attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://maypoin.ru/strik?utm_term=misbehaving+richard+thaler+audiobook PDF link annotation
    • http://dokakepitizix.medianewsonline.com/market_segmentation_targeting_and_positioning_examples.pdfIn PDF document text
    • http://vipadminler.org/the_collector_book_summaryfudmw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500447/normal_5ff7584e0f957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387703/normal_602b6b89b507e.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/can_i_use_my_battery_charger_as_a_battery_tender1drd8.pdfIn PDF document text
    • http://zunuruxeguxifi.mygamesonline.org/angeles_y_demonios_free.pdfIn PDF document text
    • http://rofogukiluvupu.mygamesonline.org/kufinigokeruzovibe.pdfIn PDF document text
    • http://help-copyrighteamservice.com/low_cholesterol_diet_aha9z9qw.pdfIn PDF document text
    • https://gerogebu.weebly.com/uploads/1/3/1/6/131637886/3921681.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446925/normal_5fd9b6cb8300e.pdfIn PDF document text
    • http://fibisazorowax.mypressonline.com/ocean_of_books.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463526/normal_6017aa61dd437.pdfIn PDF document text
    • https://nabezaxe.weebly.com/uploads/1/3/4/8/134852032/rikibuxapoja_rinadoguz_fevupovepog_sokifisarobofu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460048/normal_60401cf73f20b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503787/normal_603aca8f33430.pdfIn PDF document text
    • http://aicberg.net/ninety_six_high_school_staff00jgi.pdfIn PDF document text
    • http://edayafar.xyz/xomepijalo4jdpy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490524/normal_600dfc6f0117a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416654/normal_605d1fc20136a.pdfIn PDF document text
    • http://fobativ.mywebcommunity.org/foxitaf.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://resisimokopi.epizy.com/46407291562.pdfIn PDF document text
    • http://bekogufepe.rf.gd/french_dictionary_audio_pronunciation_free.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_off0000e99a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99A 5352 bytes
SHA-256: 31230fd6a5a108caa710bc416d8ea24b57ffd384ab64f741c526e7c7009a99f8
font_01_sfnt_off0000fbc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC3 11860 bytes
SHA-256: 8a2a0940fd3cb029e20d193f5252f1961ccd3ff0067bf0ffe3e2458a4051df28
font_02_sfnt_off000122ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122EF 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c