Malicious PDF — malware analysis report

Static analysis result for SHA-256 87689bf501509d1d…

MALICIOUS

PDF

76.0 KB Created: 2021-04-07 11:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 47e2e04126e5f8e597dbe0c38367f054 SHA-1: fc2752eb862e32b0c57684311eec98a71cf49314 SHA-256: 87689bf501509d1d1396e35c18f2b8c13c4d501fb5b3c17dd6fca1d777168d5c
184 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many of which point to disposable domains or link farms, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs suggest the document is designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7018

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://mezovuduw.ru/strik?utm_term=boss+dr-3+footswitch PDF link annotation
    • http://jisetatiloro.scienceontheweb.net/46666889594.pdfIn PDF document text
    • http://kigirifaduguv.getenjoyment.net/56648515680.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/7KhjbN7/war_with_grandpa_showtimes.pdfIn PDF document text
    • https://cdn.sqhk.co/ketalidukepi/eJKjjj5/biguwirulize.pdfIn PDF document text
    • http://suwefazimim.medianewsonline.com/kokulodedobek.pdfIn PDF document text
    • https://cdn.sqhk.co/tulazofava/Zjdghgd/bible_in_basic_english_free.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/fawgjOh/vuzovut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e5b7f393-9b83-42c5-a877-5b85c0c772c8.filesusr.com/ugd/77b42d_c8ab51696cb0409e851c9e1c2bdce330.pdf?index=trueIn PDF document text
    • https://14864a69-2465-45da-a912-c6f78a3f99b9.filesusr.com/ugd/409ca8_a5a2fc5beb0842c1863bb9e622b0d8bc.pdf?index=trueIn PDF document text
    • https://b634734f-67aa-4edc-9b69-dcf7610e4690.filesusr.com/ugd/c86859_29a4cc6769e2449396b752ca37eda2a9.pdf?index=trueIn PDF document text
    • http://mufomasugom.epizy.com/62065487787.pdfIn PDF document text
    • https://f856bbc4-01c8-45e4-8891-a53c5ee59fd0.filesusr.com/ugd/8e827e_ae722c78061143bd900554e93a3eb8d7.pdf?index=trueIn PDF document text
    • http://totefopige.atwebpages.com/57171514537.pdfIn PDF document text
    • https://f74ea38a-ab8d-49a0-8d31-9a1d7ce64423.filesusr.com/ugd/5ceade_5b2bf02ec5d9474aaf641f9d4e5af3dd.pdf?index=trueIn PDF document text
    • https://45dcde1a-aed5-4138-b95e-a0f768a283bf.filesusr.com/ugd/89441e_7a1d13b6fff649c7bf66dbb1b374fdfd.pdf?index=trueIn PDF document text
    • https://1ffb5d6c-d890-49e0-9b87-dc10fbfa49e2.filesusr.com/ugd/8bc2a6_c633001d0ccc4b298cc434fcae464452.pdf?index=trueIn PDF document text
    • http://luwawabegopit.rf.gd/xesadege.pdfIn PDF document text
    • http://lidudoxodirabi.rf.gd/veweniziwulero.pdfIn PDF document text
    • https://27a83426-c768-4525-a63d-b5b732cca755.filesusr.com/ugd/28b3f7_a118472c99c74f0080d3edc094c97e43.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/54eefe5d-576d-4093-b378-750a835336a3/viwuwuwigizibufuwexeguf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1767db4-92cb-48c3-ac7f-dda79f2419b4/mtd_lawn_mower_oil.pdfIn PDF document text
    • http://gexovegamone.rf.gd/sol._du._ac._in_2018_date_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a0eea9b-9bb2-4f9e-aa4b-33aafc6efbd7/how_to_become_a_storyboard_artist_for_cartoon_network.pdfIn PDF document text
    • https://32b33340-d9da-4ef7-b3bd-a0ac5134eb71.filesusr.com/ugd/adfa6f_c6b8fea03cdc4ec8add5302519c4b749.pdf?index=trueIn 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_off0000f9d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D0 5204 bytes
SHA-256: 511e80982b5684e11c25952828f23376b605bdfd3843992535bb55ea5af1604c
font_01_sfnt_off00010ba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA1 11312 bytes
SHA-256: 3fd8da12b82d22908eb64db4c3be17823560510d52ec5c821445b367483bd698

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