Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e50353ecf25606…

MALICIOUS

PDF

150.5 KB Created: 2021-03-13 13:39:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 87005f478d15e8b73154e1747a700f01 SHA-1: 91ce6eb6a238b9dea7f44dd9fb9e825ec2e99a35 SHA-256: 96e50353ecf25606f245e6386f8eb74184b4eed7ff272dcfa1f4f0a6e3c02952
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URLs point towards a spearphishing attachment, likely leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://midufefew.ru/wix?keyword=the+50th+law+pdf+drive PDF link annotation
    • http://zevibeponakat.getenjoyment.net/63696925803.pdfIn PDF document text
    • http://biduwupukipajov.22web.org/speed_test_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/moxasapiwer/a8Dphde/at_t_prepaid_refill_card_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453329/normal_60028fc64f457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495391/normal_6033019ef2dbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_601cbf904a1c9.pdfIn PDF document text
    • http://janorewaxeno.mygamesonline.org/fiwabegarufemobidorivip.pdfIn PDF document text
    • https://cdn.sqhk.co/datawafag/eifihSH/juicy_fruit_snack_shorts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530868/normal_60070d6d05205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379968/normal_5fd7c95e29341.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462992/normal_5fdf5834c645e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487935/normal_603408bd4e34b.pdfIn PDF document text
    • https://cdn.sqhk.co/guxudakakali/fghjbgj/barber_shops_houston_heights.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447885/normal_6016c9387a224.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369908/normal_60449a82d913d.pdfIn PDF document text
    • https://cdn.sqhk.co/wujamufaw/i0Ddjd5/bojalavovopedurupiji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0e8f88b9-656e-4b05-9cd8-8bd477f85547.filesusr.com/ugd/95b9ea_3d7efc73c5414ca3b8fb94fc5dc84c4f.pdf?index=trueIn PDF document text
    • http://nenujogi.rf.gd/beyond_brawn_download.pdfIn PDF document text
    • http://zitulogakapede.myartsonline.com/the_secret_life_of_pets_2_full_movie.pdfIn PDF document text
    • http://redifigikutusoj.myartsonline.com/33178489778.pdfIn PDF document text
    • https://f3dbd103-cf2f-44fc-b0ad-c9004dc38af2.filesusr.com/ugd/1f2646_d390916ccce44c5a9af3b095bd10dab1.pdf?index=trueIn PDF document text
    • http://fatewazut.epizy.com/16023461315.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002087e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2087E 3080 bytes
SHA-256: 3b6c3edccbbdf68622c80e44ac099bd4bffa00507f4f1bc839f0bdbf087aa810
font_01_sfnt_off00021388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21388 5316 bytes
SHA-256: 748370cc4eeb271f2407dee1a4bf384ebcb075b57284726cb7cf4d4ee25caf4a
font_02_sfnt_off000225bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x225BB 11088 bytes
SHA-256: e8dfc4dc59f5efdc156ddcfd5ba0d28ceec02c08a9634bf5876c32478e9153b8

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