Malicious PDF — malware analysis report

Static analysis result for SHA-256 32289b4dc510c2b8…

MALICIOUS

PDF

70.6 KB Created: 2021-01-17 14:38:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ab04b7a1b3f9a99d17203c79c614d8bd SHA-1: 3d4c7fa8acf618b885a28d637536578947ffc92c SHA-256: 32289b4dc510c2b8b0812156da654b55ee4e3584b32f8198cc5005964ffeaf72
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, indicating a phishing or link-farming attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to phishing sites or download further malware. No scripts were extracted, but the PDF structure itself is indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/aws?utm_term=idiomatic+expressions+worksheets PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374207/normal_5fd68dfb11cf2.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/fabf5383a5d6.pdfIn PDF document text
    • https://site-1171851.mozfiles.com/files/1171851/galaxy_attack_space_shooter_gift_codes.pdfIn PDF document text
    • https://toroborelap.weebly.com/uploads/1/3/4/8/134867907/bc691a92a.pdfIn PDF document text
    • https://site-1216718.mozfiles.com/files/1216718/95464677262.pdfIn PDF document text
    • https://cdn.sqhk.co/simizekovogi/idMttQr/39623161582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469834/normal_5faf9ccbb9a7e.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/putubomutizona.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/hfNvxsK/does_find_my_friends_work_on_apple_watch.pdfIn PDF document text
    • https://bikojeril.weebly.com/uploads/1/3/3/9/133999271/2902165.pdfIn PDF document text
    • https://site-1178548.mozfiles.com/files/1178548/jajizibejubap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buwozefavimim.epizy.com/badlion_client_1._8_9.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d76c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD76C 5440 bytes
SHA-256: c40124a865c7bf6bdf1d48eaf760254e175aa2d1db40b5800eafe91b2334ca7e
font_01_sfnt_off0000e9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D1 10640 bytes
SHA-256: 96a275d70b9e0390d0bfcf0474cc8c5150fa71570726783344703f80af2a3f1f

Open this report in the interactive analyzer, or submit your own file for analysis.