Malicious PDF — malware analysis report

Static analysis result for SHA-256 adce4be994ad2d12…

MALICIOUS

PDF

90.7 KB Created: 2021-02-28 15:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 97032c8580070b88a1ef3017ad9feb2f SHA-1: 2637e29db1c0728ddc8c3e507cdaa8efdab49b95 SHA-256: adce4be994ad2d12a5d55548c889f0dd3eaf2877d091ba47929a447b48a33944
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded links pointing to disposable domains, suggesting a phishing campaign or a link farm designed to redirect users to malicious content. The document body, though heavily corrupted, appears to be a lure related to a product manual.

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://botokaw.ru/123?utm_term=line+6+spider+2+150+watt+manual PDF link annotation
    • https://cdn.sqhk.co/pigexebobe/ibkFmgf/newsies_musical_ben_cook.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365626/normal_6001e6d87fc97.pdfIn PDF document text
    • http://monstergym.ru/69170844795edpfq.pdfIn PDF document text
    • https://cdn.sqhk.co/vusabutam/ibgFNcE/24528923668.pdfIn PDF document text
    • http://itasummer.fun/personal_development_plan_objectives_sample4d2hy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476569/normal_6016b30ae8b8e.pdfIn PDF document text
    • http://copyrightnotice-ig.com/793739956809a2ft.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416810/normal_6039b647d3c4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474462/normal_5ff35cc22ff92.pdfIn PDF document text
    • http://questotzvezd.space/romaxakepu4z4d0.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvukidovime/rIrCVhb/16113375478.pdfIn PDF document text
    • http://znakomstva69.space/nuworatazeworavep0u3y0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402267/normal_5ffdaa300db33.pdfIn PDF document text
    • http://zuwazari.22web.org/chordal_harmony_janek_gwizdala.pdfIn PDF document text
    • http://prizinsta365.website/human_sexuality_diversity_in_contem7xd18.pdfIn PDF document text
    • http://zarabatyivat.ru/latest_movies_free_2018_bollywood29vrk.pdfIn PDF document text
    • http://sovetnik53.ru/definition_visual_cultureyh86b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001156a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1156A 2952 bytes
SHA-256: e211f2d6e0d1bf1fd17bd5150bc2724fb7c0f1d37b1c69b855d9dcad8de34ab0
font_01_sfnt_off00011ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF8 5740 bytes
SHA-256: 033da1c3efcc9e0d2e9549d4cca6d225fdaea1dd278e78d0e8d449ec9e69ab37
font_02_sfnt_off00013389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13389 12596 bytes
SHA-256: d18e3d3fe20e26f9ba5660a38b2d5651f5d9bbc21ed225448f8369556c3cca36

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