Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f212081557ef353…

MALICIOUS

PDF

80.0 KB Created: 2021-02-03 18:45:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 1fc6968423ee8728ecb2e536cf27a46f SHA-1: ab113aa649fd5ac46c84ce79e3a656e8921338ca SHA-256: 6f212081557ef3534f60a994b3251b13845f9ced1090ce84129b1201e7efbe9c
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'apush chapter 39 key terms', suggesting a lure to trick users into clicking the malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=apush+chapter+39+key+terms In PDF document text
    • https://gekibevuzoz.weebly.com/uploads/1/3/4/5/134503907/1daa1.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuwaxisiw/cbifFTo/26164913560.pdfIn PDF document text
    • https://patijunig.weebly.com/uploads/1/3/0/9/130969449/xapasaburoxuzemaweti.pdfIn PDF document text
    • http://kittyplay.online/71605641822i4xwf.pdfIn PDF document text
    • http://storeeu.info/65650648661uzrq7.pdfIn PDF document text
    • http://kvyovk.xyz/merlin_season_5_torrentmn9mz.pdfIn PDF document text
    • http://vostokzapad.su/zasixubatapigulifq5t1j.pdfIn PDF document text
    • http://begemotiks.fun/green_poop_meaning_newbornqoxsn.pdfIn PDF document text
    • https://zipelademijup.weebly.com/uploads/1/3/4/0/134017001/71783d824.pdfIn PDF document text
    • https://watorixaziju.weebly.com/uploads/1/3/4/5/134586039/gesuv.pdfIn PDF document text
    • http://limons.space/chris_hemsworth_workout_planay180.pdfIn PDF document text
    • http://activa-fb.com/isotopes_are_all_atoms_of_an_element_alike6v1co.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wupubobetob.epizy.com/4153807009.pdfIn PDF document text
    • http://kakarares.epizy.com/tamilrockers_net_tamil_movies_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/gedupaxirakikotunizulilef.pdfIn PDF document text
    • http://lonukidoni.epizy.com/wexubanemilurife.pdfIn PDF document text
    • http://potelodifudoduj.epizy.com/animation_meaning.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB73 5616 bytes
SHA-256: abd7b2535af998eb293b959ff4cef49aa55de77a06847556055e8a2676f06810
font_01_sfnt_off00010e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E67 10616 bytes
SHA-256: 0e40c651264221fbb46452a424364f69f01997f88a0157a13d3118448f1479f3

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