Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6bd04e641e32816…

MALICIOUS

PDF

68.5 KB Created: 2021-06-01 16:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: fe0ce1ba3c6bddddd379a8047b94916d SHA-1: a636a0200197233b474042da81cc67433d2fd310 SHA-256: e6bd04e641e328168b96f29a9aa19d3b06582822e4e32bb9fb0fe48af57ee33b
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm designed to redirect users. The document body, though heavily obfuscated, contains references to movie downloads, suggesting a lure to entice users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crewmak.ru/pbw?utm_term=filmywap+south+movie+2019+in+hindi PDF link annotation
    • https://mewupigokudupez.weebly.com/uploads/1/3/0/7/130738506/efc6286d22c52.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482623/normal_5fc72a170c1e8.pdfIn PDF document text
    • https://vadunidiv.weebly.com/uploads/1/3/4/4/134464125/1afc75a4.pdfIn PDF document text
    • https://bekawoxe.weebly.com/uploads/1/3/4/5/134529307/ac8d9b3858691.pdfIn PDF document text
    • https://kumisorulilinim.weebly.com/uploads/1/3/4/7/134750082/vozorilemexiso.pdfIn PDF document text
    • https://vipeketiduwe.weebly.com/uploads/1/3/1/6/131636725/21260bead.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_600b6a90f2736.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/772b1f13-b6ee-498f-936a-7f18e9a44952/sevomurokuxubegisuzap.pdfIn PDF document text
    • http://muxopal.pbworks.com/f/dakexugerosezuri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/635e422a-1dab-4e45-b50b-f44b04892f0d/baldurs_gate_3_full_release_date_pc.pdfIn PDF document text
    • http://xoxafepapesu.pbworks.com/f/what_is_an_example_of_combined_variation.pdfIn PDF document text
    • http://xosufixemuf.pbworks.com/w/file/fetch/144442497/34562694207.pdfIn PDF document text
    • http://sajateves.pbworks.com/f/dragonvale_free_gems_hack.pdfIn PDF document text
    • http://jajafad.pbworks.com/f/34809982007.pdfIn PDF document text
    • http://gosirata.pbworks.com/w/file/fetch/144456120/fagitamenuzaridariw.pdfIn PDF document text
    • http://risoxef.pbworks.com/f/40539788136.pdfIn PDF document text
    • http://barumena.pbworks.com/f/arabalar_izgi_film_indir_trke_dublaj.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_off0000cee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE9 5796 bytes
SHA-256: 7d16f0a102982ed5fc7f2a438d9890f376e267638ddc0f8d955d68edf3dec29e
font_01_sfnt_off0000e29c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29C 10040 bytes
SHA-256: ebeb76c39e703e078ad2491437623a6c8f83393247cb965240c8d294491681e1

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