Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a69af9ab003727…

MALICIOUS

PDF

69.6 KB Created: 2021-05-05 12:16:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 7fafc62e33854f392ddd18c039a090c4 SHA-1: 4bebe4478f0147c8500fd40df2aba41363255e3e SHA-256: 01a69af9ab00372718dccba50577082617a38d904e5dd5ee8315678e625787e3
186 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 hosted on disposable domains, suggesting a link farm or phishing campaign. The presence of a specific URL with a UTM term indicates an attempt to track user engagement with a particular search query. ClamAV and ML classifiers also flagged this file as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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
  • 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://ponafet.ru/strik?utm_term=changing+transmission+drive+belt+cub+cadet+lt1046 PDF link annotation
    • https://cdn.sqhk.co/samivegin/eNgeLcB/hockey_stick_putter.pdfIn PDF document text
    • https://kowasazupajobex.weebly.com/uploads/1/3/1/3/131383373/wixopune.pdfIn PDF document text
    • https://fijisakotapabe.weebly.com/uploads/1/3/4/0/134013267/bobuwamape.pdfIn PDF document text
    • https://ledapenilodaro.weebly.com/uploads/1/3/1/0/131070651/gewujixazi-wumumuwigeso-rofotifewiwoja.pdfIn PDF document text
    • https://fagojature.weebly.com/uploads/1/3/3/9/133987822/2321551.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxoporerom/om1ie6r/atlantic_fleet_2.pdfIn PDF document text
    • https://vovasodakujex.weebly.com/uploads/1/3/0/8/130874601/52aad53e593d3c2.pdfIn PDF document text
    • https://pudavupotel.weebly.com/uploads/1/3/5/3/135335197/6399586.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/yziikgg/lutejufe.pdfIn PDF document text
    • https://pupadidaf.weebly.com/uploads/1/3/0/8/130873798/36e479453559ad.pdfIn PDF document text
    • https://zaxizibu.weebly.com/uploads/1/3/4/6/134672664/vokokof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://37e0f79d-b0c1-4727-b76d-5b759c81288f.filesusr.com/ugd/9c66ff_259aec5005234006bc79384a31b82a88.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/the_soul_of_an_octopus_sparknotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1d5a04f-23bd-4691-8cd6-40a4ced0cfde/32731422736.pdfIn PDF document text
    • https://ce5d016b-e5fb-4004-af8f-35f61b829e22.filesusr.com/ugd/d7d7f8_a5431ec3c0f0441dbf7354aceeeaf5a5.pdf?index=trueIn PDF document text
    • https://80cb706b-a9cc-40e6-9cd2-ad5688d6c4a8.filesusr.com/ugd/c84a73_cf08fd5b854e4c20a2fd05a14f72c8fe.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ff76a7a-2468-40ab-b9a5-1663ee6a291e/59928510804.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/ikea_malm_queen_bed_frame_low.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f5f6497-766f-4c34-9772-90cb46520df4/who_is_on_the_cover_of_bands_of_mourning.pdfIn PDF document text
    • https://18b62485-dce0-4e35-9712-b1d1f13fcb23.filesusr.com/ugd/296484_39ec61553edb4185b484156173ca5c8d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/popisiburewixuj/gusade.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/valipi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7a0d312-4b8f-4d4a-8c32-b2df814a3977/wazazapamabarekuwuza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a6f2c97-ab8f-4bb1-93c7-9e97b53b3be0/betirubax.pdfIn PDF document text
    • https://5e04165b-6ab1-49a6-9937-45006fc2fbeb.filesusr.com/ugd/d19879_f8293c0120714674bd344026f7781d50.pdf?index=trueIn 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_off0000d1e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E6 5896 bytes
SHA-256: 9e7aefbc434a821a5ceb253a047e4bb68dd7416d1a3636595b4ca797227cfc67
font_01_sfnt_off0000e5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D2 10188 bytes
SHA-256: f7064f2a316f53351ca69105212dad47617a38a140ded42d5b7ef070f8b2280a