Malicious PDF — malware analysis report

Static analysis result for SHA-256 d42c980a154699f4…

MALICIOUS

PDF

71.8 KB Created: 2021-02-17 23:11:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dd7d2849b224eae1d164ff0a80431619 SHA-1: 0e39b7f0bdf3cf5e69fcfebe969237e33b0f0800 SHA-256: d42c980a154699f440e23d90ea3728252e9ab577b743b3643b68d75972b3f152
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious intent, including ML classification and ClamAV detection. It presents lures for MFA/one-time-code harvesting and callback phishing, suggesting a credential phishing or scam attempt. The embedded URI points to a suspicious domain, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://jottigo.ru/strik?utm_term=how+to+reset+my+adt+system PDF link annotation
    • http://sevastopol.sale/tewobolaxivavupxo4l.pdfIn PDF document text
    • http://topvideo.design/breve_storia_della_lingua_italianazqym0.pdfIn PDF document text
    • http://sokfresh.fun/tiger_shroff_all_movie_songs_download_pagalworldqjjal.pdfIn PDF document text
    • https://cdn.sqhk.co/madosodu/bFUgi9D/wudoki.pdfIn PDF document text
    • https://cdn.sqhk.co/kimejijomaki/Mhf2iiy/kalozinevajofuzoxudevezex.pdfIn PDF document text
    • http://websporizle3.com/gakabelitokopogedokarnbmzm.pdfIn PDF document text
    • https://cdn.sqhk.co/nowagenika/abAhjjf/radiation_island_free.pdfIn PDF document text
    • http://thrivewebs.com/understanding_the_bouguer_anomalyxo6mj.pdfIn PDF document text
    • http://arboozfilm.com/4099588889qqr2i.pdfIn PDF document text
    • http://prod-fruit.space/vunovirizinwt54k.pdfIn PDF document text
    • http://marketitaly.pro/responsive_dashboard_templates_bootstrapgcf4p.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/tanikanaw/cancer_stem_cells_in_glioblastoma_multiforme.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/bigevudurasezad.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_off0000dcdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDF 5092 bytes
SHA-256: b3ca97252d3aacee5f6ff7586c3e42df606bbf998db97dedc5d36e6e71e8c5ae
font_01_sfnt_off0000ee26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE26 10628 bytes
SHA-256: 576bd71bced4c1f4a93a5b43a1034a39841ea407874f1025ede0e362639c0c3b

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