Malicious PDF — malware analysis report

Static analysis result for SHA-256 224820e304898f07…

MALICIOUS

PDF

78.0 KB Created: 2021-04-17 04:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 008ad4174ac17425d8bba9ef97031619 SHA-1: 92ae673543cdb6d01a03af964f4b00c048ad2a74 SHA-256: 224820e304898f076e35301f6851af865fd458b12676441002413145cd3d6498
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many of which point to disposable domains, suggesting a link farm or phishing lure. The primary URL, 'https://soxebez.ru/strik?utm_term=is+covid+test+centre+open+today', is likely used to redirect users to malicious content. No scripts were extracted, but the structure and numerous external links indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://soxebez.ru/strik?utm_term=is+covid+test+centre+open+today PDF link annotation
    • https://cdn.sqhk.co/vudupapuj/dij6Shi/stick_bow_2_game.pdfIn PDF document text
    • http://bovewitavivebu.getenjoyment.net/fuxuvonitaduvokowuxof.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/jDgfBzr/70359643349.pdfIn PDF document text
    • https://cdn.sqhk.co/paparidew/jhicoji/76696513921.pdfIn PDF document text
    • http://nakidki-alkantara.xyz/21519982210yhaud.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/pubujobi.pdfIn PDF document text
    • http://skameyki.club/401408877795zq8v.pdfIn PDF document text
    • https://dirujewe.weebly.com/uploads/1/3/4/6/134677456/fuxofonagir-birunogif-bimituxedi-vamiwepob.pdfIn PDF document text
    • https://cdn.sqhk.co/xazururoxe/icZjaAh/game_of_thrones_cast_season_8_salary.pdfIn PDF document text
    • http://agent-spv.space/grandparents_day_ideas_for_middle_schoolbg2pq.pdfIn PDF document text
    • https://suzavopuwo.weebly.com/uploads/1/3/4/6/134686694/fakaruloba.pdfIn PDF document text
    • https://bevowodawalejap.weebly.com/uploads/1/3/4/3/134363876/bc4585778.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459483/normal_605f5b1d608c4.pdfIn PDF document text
    • https://cdn.sqhk.co/kafosine/ic5ia72/vobaseriluripivodexafufu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459054/normal_6056d47f34cf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403141/normal_600b388febbba.pdfIn PDF document text
    • https://rovonowevon.weebly.com/uploads/1/3/6/0/136051941/lesozi.pdfIn PDF document text
    • http://jepisafidezegun.scienceontheweb.net/37009095708.pdfIn PDF document text
    • https://jijelejo.weebly.com/uploads/1/3/4/5/134590633/wadeb_bovivukuru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374178/normal_6036e1ede100c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376087/normal_600c3a2bce19c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5d3a3edc-1384-4eb0-a354-174dd54c13aa.filesusr.com/ugd/7f5dc5_b7f9132a5c584156b035e70ae71dc093.pdf?index=trueIn PDF document text
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_b3bfff84cfc844a0b3e485679ff568c3.pdf?index=trueIn PDF document text
    • https://8fc1c2d6-49ba-4d63-8b95-0327ef2b1627.filesusr.com/ugd/1849a1_9a67b9e5812145dda84aa76cccf64bcb.pdf?index=trueIn PDF document text
    • https://ec75ba9f-29a7-4b73-bb51-4c951d20089f.filesusr.com/ugd/17cde0_0f4b85ae66da4f59916c1519c6f62b30.pdf?index=trueIn PDF document text
    • http://wenulusevikofa.myartsonline.com/botaxozijerina.pdfIn PDF document text
    • https://1cf095b7-1d29-4152-b82c-7733cf7ba0c7.filesusr.com/ugd/c1de29_a4ff3eff63954dca91d1e3b6d5c659c0.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28E 5136 bytes
SHA-256: 9e4882922d3a5984e9a98bc3f0d631e4862874dfd487ac6ebe78233764045eb1
font_01_sfnt_off00010421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10421 11284 bytes
SHA-256: 9731e7bc820381094df47a18278f905545e8211622d8dc9b549e83bd19923c9e

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