Malicious PDF — malware analysis report

Static analysis result for SHA-256 513729be5a835e90…

MALICIOUS

PDF

75.8 KB Created: 2021-03-22 11:39:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 879e29310b7d8df6af09ec2d6088671a SHA-1: 513b34e7e1eb6d7565587f47a53dd748aee21841 SHA-256: 513729be5a835e9056f543f6be180b635945247c7ec05387367ffd58427bcf61
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous external URIs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'Donald tyson books pdf', indicating a phishing attempt to direct users to malicious websites. No scripts were extracted, but the presence of multiple suspicious URLs points to a malware distribution or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/wix?keyword=donald+tyson+books+pdf PDF link annotation
    • http://wupemokabate.scienceontheweb.net/kufifuzatafisij.pdfIn PDF document text
    • http://itanto.space/qmp_board_army8zaex.pdfIn PDF document text
    • http://lesantyqas.online/tutapiwr1n5.pdfIn PDF document text
    • http://redirunna.xyz/vibonexoduniwejaxp1pbj.pdfIn PDF document text
    • http://powerhdniy.space/15538673054eoxx8.pdfIn PDF document text
    • http://esparks.ru/dejogixigib6tff7.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/34994592242.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wutewak.rf.gd/vipowozufudodadora.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/what_vegetables_to_eat_in_gm_diet_plan.pdfIn PDF document text
    • http://bepinutarefe.rf.gd/67817230073.pdfIn PDF document text
    • https://c8070bf9-ed42-4c5d-8eb8-ca35ee70f136.filesusr.com/ugd/d38238_49dedda288e84c5bbe86e86bd393c71b.pdf?index=trueIn PDF document text
    • https://2c5a832e-93c4-4ab0-bef0-969ef348d747.filesusr.com/ugd/cc5daa_8179ce7d84174364a9196ff9b44a1513.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/70f22abb-a804-4a02-9532-d6cbf9fa0aaf/89042762825.pdfIn PDF document text
    • https://d56a38bf-d62e-453c-9b5b-5b2fe88aea46.filesusr.com/ugd/359e64_fd934d52a1534a25a4ad69e367d909d0.pdf?index=trueIn PDF document text
    • http://gosewobagoxubok.rf.gd/mad_max_game_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/223ac6cc-87ce-47b1-a15f-3183dfdf55a3/bechdel_test_filme.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/36945439083.pdfIn PDF document text
    • https://12f7643e-9106-4823-89c2-0bdaecd1bc22.filesusr.com/ugd/1f6d71_71e34e1c2fa746909babc6ac1eba7dd4.pdf?index=trueIn PDF document text
    • https://4900ecec-7ac1-411c-be2c-b077674085c8.filesusr.com/ugd/493135_484f6a6d5d434171b1d76b5661695aba.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8df6d7e8-3b36-4476-a586-6be6ee042ab2/perov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/752de15d-f6be-498f-a0fb-afa758f9ce79/panasonic_sd-yd250_banana_bread_recipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b47d63f5-2320-41a2-8080-4bec761f2c57/how_old_is_dell_latitude.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

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_off0000ea58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA58 5244 bytes
SHA-256: 44b10cf19aedb6133b14b159f35a82d7b0740bbd2b56b043e4333a7c79c58a8b
font_01_sfnt_off0000fc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4E 11028 bytes
SHA-256: 950c738c0b856c10f494480d7df62267d005693d389ac660ddbf6d315a4264cc

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