Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabb667c13790631…

MALICIOUS

PDF

85.9 KB Created: 2021-03-19 10:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be38c0080a0ea9b1c53de4aa30070b82 SHA-1: 9f1c5290edc38380c1c36921b5e1af7ec26be54f SHA-256: eabb667c1379063149a015846c398bd3bf106e888e0ec2ff3b63bd3624e39c8e
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. It contains numerous external links, with the primary malicious URLs being lozipotod.ru and strahuemsya.info, suggesting a phishing or malware distribution campaign. The ClamAV detection further confirms its malicious nature as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/123?utm_term=java+resttemplate+application%252F+x-+www-+form-+urlencoded
    • http://strahuemsya.info/ashrae_handbook_fundamentals_2013_pdxi1p7.pdf
    • http://bathforlegs.xyz/bells_of_notre_dame_sheet_music_clarinetvhamv.pdf
    • http://connexion-amelii.xyz/goseba6bgu8.pdf
    • http://sallehub.xyz/bengali_love_story_album_ganasi3pk.pdf
    • http://flowerport.store/313130631300x7r.pdf
    • http://bigswinner.space/13326946024t7816.pdf
    • http://ilkertr.shop/what_would_life_be_like_if_pangea_still_existed7apzx.pdf
    • http://svoydvalend.xyz/bulunu9p6oc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://01c19f78-c7d0-441a-b56a-8672493f87de.filesusr.com/ugd/9d66c7_ceb4f6ffe8034971b3ddc842fa7095bb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/81922e5c-ecad-40bd-8c7e-a350d376d381/48018362519.pdf
    • https://ca483b97-61ac-4196-bca0-6b249c18eca9.filesusr.com/ugd/b27199_1564969e697a4535a75b5a6a522a33ee.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e61db4d9-2976-47dd-9476-bdb1a109f077/sijuxisuj.pdf
    • https://uploads.strikinglycdn.com/files/37845905-f1c4-4f23-9115-c5d568939a78/which_treasures_have_been_found_from_the_book_the_secret.pdf
    • https://uploads.strikinglycdn.com/files/fc38f05b-c603-4ff8-ad16-f20bd54906db/hot_spring_portable_spa_turn_off.pdf
    • https://uploads.strikinglycdn.com/files/d1f06e61-2ef5-4b09-8146-32da29278623/79822187850.pdf
    • https://uploads.strikinglycdn.com/files/99b94eda-5b99-4312-9e0d-56166391b9fd/chapter_10_completing_the_accounting_cycle_for_a_sole_proprietorship_test_answers.pdf
    • https://uploads.strikinglycdn.com/files/393fc3ff-6ed5-4314-a8d9-e677ca99ff47/61039432520.pdf
    • https://9a60fab3-6fb0-4be7-9305-b2e3cc44d963.filesusr.com/ugd/811c4f_2c27b380958e4a26b4f66f2e1831e67a.pdf?index=true
    • http://vomewudige.atwebpages.com/51180087053.pdf
    • http://fabedidatifi.onlinewebshop.net/98674430428.pdf
    • https://uploads.strikinglycdn.com/files/79789a6d-1cf9-4b70-b4f2-1f5e82026475/63107560157.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001003c.bin
45e1d4f0bfcd691977366740a2a6787e32abccbfdae36a8b781798213b1e2fd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1003C 5460 bytes
font_01_sfnt_off000112cf.bin
e09a060c8d2a6cd28fa8ad59f893589d0601c6e6f3b4aa38bde5a5efa9285637		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112CF 11940 bytes
font_02_sfnt_off00013b43.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B43 4324 bytes

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