Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d62e0c144ed10fb…

MALICIOUS

PDF

81.2 KB Created: 2021-05-30 19:45:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bf8347a86b2c6e534c8ee2891f9be3eb SHA-1: aca87865b779d66f112992b0529b5c8e697371d4 SHA-256: 9d62e0c144ed10fb01c60da8967af907b087e4d7b1f80ffc692cf1c0356aaea2
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many of which are likely part of a link farm designed to distribute malware or phish for credentials. The document's content, though heavily obfuscated, suggests a lure related to movie downloads, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://nipisod.ru/123?utm_term=burma+full+movie++hd PDF link annotation
    • https://mevexifuk.weebly.com/uploads/1/3/5/3/135345040/5185120385cbf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389821/normal_5fd2cff945f85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405419/normal_602a886db2bc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446650/normal_6048d315e125a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5fd26c206962a.pdfIn PDF document text
    • https://fegexogemitise.weebly.com/uploads/1/3/4/6/134602812/punexemutofitudafi.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4462379/normal_60b309f5806c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381756/normal_602283206e788.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450158/normal_5fc8c18c56a3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369932/normal_6054edd82d660.pdfIn PDF document text
    • https://rexavinuzuna.weebly.com/uploads/1/3/4/3/134308075/xesorefisonuvikev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381735/normal_602acb193a7dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c0991e5a-ccf6-4b5f-a849-e24f9ec764d5/star_trek_voyager_characters_now.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6ffdda9-c494-41f6-a0d8-a3cfabfccb53/how_to_get_baby_g_shock_off_military_time.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/813815dd-bd7e-4062-803d-d5dc38084ff4/resident_evil_4_cheats_pc_trainer_1.1.0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e654f42-ef75-4be0-a85d-4c415e9470b5/resmed_airsense_10_autoset_price_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56d5b656-7b24-4800-b678-e8e0f3f0460c/what_to_do_when_your_fire_stick_remote_stops_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96139441-0efa-43a6-88a5-6d3ff2b401fd/auld_lang_syne_chords_dan_fogelberg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39bb2840-f048-40bc-8dbf-fe8fb0d96286/devule.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_off0000f5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BE 4772 bytes
SHA-256: c19e94373d02b5a1f74cac195d139e8559fd28870287ce6e8615ced4f79d7eed
font_01_sfnt_off000105f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F5 10660 bytes
SHA-256: 652c9e84ee38bd0af59d46047124254ceb2d8a6acb721532f6d3afe5cf0d3665
font_02_sfnt_off000129a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129A1 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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