Malicious PDF — malware analysis report

Static analysis result for SHA-256 13b396aa987c751f…

MALICIOUS

PDF

99.0 KB Created: 2021-03-24 00:29:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cd1707cf0ac570ab412821f5223d2b54 SHA-1: 70acdc03692cf9ec030227abbf6cd37e4e29f418 SHA-256: 13b396aa987c751f6ab6151c05e35bd4be995f40ae79b516b925c48fa4ef1005
192 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to known malicious redirectors and link farms, indicating a phishing or scam campaign. The ML classifier and ClamAV detection strongly support its malicious nature. The presence of urgency lures suggests an attempt to coerce the user into clicking the malicious links.

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dafemum.ru/strik?utm_term=what+does+the+new+cod+update+include In PDF document text
    • http://botomovosisivod.22web.org/how_to_add_guided_access_on_iphone.pdfIn PDF document text
    • https://bikiwilusi.weebly.com/uploads/1/3/4/5/134512037/2f6a12dff9b5d7.pdfIn PDF document text
    • http://pulemovidake.22web.org/south_africa_house_plans.pdfIn PDF document text
    • https://sizuzoxoxef.weebly.com/uploads/1/3/4/8/134846633/df7f18dc9908.pdfIn PDF document text
    • http://fakaripeti.xyz/mofafawomotxar1u.pdfIn PDF document text
    • http://moitender.org/somexerabadibamezamakonhn5s.pdfIn PDF document text
    • http://ogranicbio.fun/how_to_make_a_pressure_transducerypz68.pdfIn PDF document text
    • http://rusiwosamafu.iblogger.org/25720381522.pdfIn PDF document text
    • http://xofofumireke.mypressonline.com/25032726004.pdfIn PDF document text
    • http://dwatches.site/28352979404sjtj7.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/the_colour_of_magic_book_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nukilaba.myartsonline.com/portland_maine_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20bb25ce-5fb2-4820-a2eb-1a48c2290182/98569240135.pdfIn PDF document text
    • http://vaxalisuj.rf.gd/the_canterbury_tales_middle_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/213395d3-7829-406e-865f-00db30b99f6d/xisejufixatuwilaf.pdfIn PDF document text
    • http://ximizadoxa.epizy.com/timebap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93436c37-99b6-4ef5-8f72-66eaf7b6f23e/figurative_language_examples_in_songs.pdfIn PDF document text
    • http://ribigilubawedom.rf.gd/norelco_5000_blades.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D60 5172 bytes
SHA-256: 84ea4d3f6043abf27cf62e317329638a57eed3aaefdfaf8b9121037d7c8290ca
font_01_sfnt_off00013f11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F11 11784 bytes
SHA-256: 3a831df1feb908eb07782ea3003a32be08b4abd8650642b341ff305bcf7a459f
font_02_sfnt_off00016752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16752 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e