Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1f1548b68b4144…

MALICIOUS

PDF

98.3 KB Created: 2021-03-16 15:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 512854737f3348e7cbd70de3ae2dfc37 SHA-1: 96f1fdee18ca666d947272939f4014d4cdcf8ec6 SHA-256: 0a1f1548b68b4144a899e22341dae5ffbe74b4bc353b04fb3872eb720ed48890
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by heuristics as a link farm and by ML classifiers as malicious. The ClamAV detection further confirms its malicious nature. The embedded URLs likely serve as lures for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://lozipotod.ru/123?utm_term=moment+of+inertia+rectangular+sheet PDF link annotation
    • http://e-devletturkiyeaidatsistemimgovtr.com/homelite_weed_eater_fuel_line_sizeh9ana.pdfIn PDF document text
    • http://alsamcctv.com/dexalisokp60n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464078/normal_60141a7915250.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/nuzukudogimibifadilime.pdfIn PDF document text
    • http://logoped-samara.ru/51222519253rgwol.pdfIn PDF document text
    • http://pss77.ru/88877383213u1y1k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387924/normal_6024f312cdcc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446264/normal_601607efc43b4.pdfIn PDF document text
    • http://anarchymedya.com/twas_the_night_before_christmas_poem_short_version_printablemutxb.pdfIn PDF document text
    • http://saveyoutubebot.com/80028131704gsnag.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/10858104367.pdfIn PDF document text
    • http://negeduji.66ghz.com/wulosodomojejunosuwuvefen.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/26744565763.pdfIn PDF document text
    • http://hookup671.site/advanced_engineering_mathematics_10th_editioni6rey.pdfIn PDF document text
    • http://kzrovk.xyz/doveretepokefeziwomej02yx.pdfIn PDF document text
    • http://kabonuwumew.66ghz.com/78208328011.pdfIn PDF document text
    • http://onenature.space/setigewebabelubep.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/dell_latitude_e6430_battery_light_flashing.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://fetudat.epizy.com/sigupadutoto.pdfIn PDF document text
    • http://fokogijisigife.epizy.com/seguzuboviroferix.pdfIn PDF document text
    • http://kunitugi.rf.gd/30789349906.pdfIn PDF document text
    • http://xelidamos.epizy.com/93610272711.pdfIn PDF document text
    • http://vorawaforase.epizy.com/95371987327.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A30 5184 bytes
SHA-256: 7678b362f22a0024d34cacf6f81fca212bd54aff4c69214d60df231587fa93d8
font_01_sfnt_off00012ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BA0 12592 bytes
SHA-256: 889c08f055c8843b4ddf8e1b48949f118e35a158de5be1ab42cb684016026bfe
font_02_sfnt_off000156d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156D7 16064 bytes
SHA-256: 77905ff9885e60cfff17cf33ad9da418757c231635603c6b4cc239c84c233917
font_03_sfnt_off00016b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B7B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3