Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ad16524f9734f8…

MALICIOUS

PDF

89.2 KB Created: 2021-03-24 03:17:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a009cee92f250a6e27c1fb34fcb9a968 SHA-1: 2a0879d42b13d7faf6f95999082181ce5a59531c SHA-256: 32ad16524f9734f80194010231cc0acb01be5ce8b285e89704b4c8de14f7e863
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL leading to a suspicious domain that appears to be part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains text related to a video game trophy, suggesting a lure to attract victims to the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/123?utm_term=guide+trophee+assassin+creed+black+flag+ps4
    • http://patajafurep.mywebcommunity.org/the_righteous_mind_free.pdf
    • http://fopokigife.mywebcommunity.org/37638789358.pdf
    • http://muzibatixabu.mypressonline.com/deep_learning_best_book.pdf
    • http://tesupelaj.sportsontheweb.net/adobe_acrobat_reader_edit_free_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bumejefivoxigo.myartsonline.com/adding_and_subtracting_fractions_with_unlike_denominators.pdf
    • https://uploads.strikinglycdn.com/files/b9877f90-2f4a-47c1-b4c8-ec0a8ac25044/how_many_carbs_in_a_taco_salad_from_taco_bell_without_the_shell.pdf
    • https://uploads.strikinglycdn.com/files/e460f7f9-6419-416a-915a-32f9edbb1495/manual_timer_omron_h3cr-a8.pdf
    • http://jukasuxoseki.atwebpages.com/how_much_money_does_premiere_pro_cost.pdf
    • https://2a4065d7-883d-43e8-a524-7ce9aa4b4e88.filesusr.com/ugd/ccb1c6_a15e47efaa3c4bcdb6a70889b79767c1.pdf?index=true
    • https://6c71f620-b6e5-46cc-9e58-526c5f0a7a41.filesusr.com/ugd/1c90dc_035b5f82459945f5b8e520439100403e.pdf?index=true
    • https://f904ef53-caa1-4f0f-8a97-c50675c03ece.filesusr.com/ugd/2f8cea_49055bf3f6954a1fa6a972c0c1c867f4.pdf?index=true
    • http://sawesupunozigiv.atwebpages.com/tiniretejola.pdf
    • https://uploads.strikinglycdn.com/files/5a766970-b293-4f7b-a187-4bad457f87a5/rorepig.pdf
    • https://uploads.strikinglycdn.com/files/f282872f-73bf-4e2d-a298-c01f168ebbed/autocad_plant_3d_ortho_view.pdf
    • https://uploads.strikinglycdn.com/files/f8bc35ad-3605-4048-a26b-88e295976182/45211465014.pdf
    • https://uploads.strikinglycdn.com/files/2f8018a5-2a65-4b93-8dd5-ed74132b59d7/when_will_nail_shops_reopen_in_los_angeles.pdf
    • https://9dd02728-8b0e-4c16-8a5b-31b14a6ec887.filesusr.com/ugd/d8c3ed_0e970fdc28a84a8487252bef8f19f5ab.pdf?index=true
    • http://dovunufesesiz.onlinewebshop.net/dexebigakor.pdf
    • https://7e005a1c-fb68-43c1-af83-b854b6a2d282.filesusr.com/ugd/dcfb95_fc57dac5aa0f42a0a13da0308bcbc47d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cb367c2f-ecd0-4f9f-bf84-e69dcf85642c/11-22-63_novel_ending.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001159f.bin
c0f20828278d3a6318fa14a506fb1f210c667b94b007ca563d4f72ddf8081275		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1159F 5740 bytes
font_01_sfnt_off00012927.bin
6bf954429e4dfea794d04ae7e46cee0ddc8a3bf1cdac4d8a10d3e0cb448fe9ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12927 14324 bytes

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