Malicious PDF — malware analysis report

Static analysis result for SHA-256 184603f6a6305010…

MALICIOUS

PDF

41.7 KB Created: 2020-09-17 12:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4c74ac0e518cf46d0df5b395e932969 SHA-1: 74f3a227b0c185d5f92a24823c004c8a303e4a60 SHA-256: 184603f6a630501069dba4ab23ba45fb8e4d72fc5b4a2f65cf35ff6b7b729007
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains the URL https://ttraff.link/wix?keyword=xplayer+apk+download+free, suggesting a lure for users to download potentially malicious software. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, further supporting a malicious intent to distribute harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.link/wix?keyword=xplayer+apk+download+free
    • http://doguzakov.creightonbrown.com/uploads/1/3/1/8/131856584/sokuxi.pdf
    • http://kojoguli.m131491.com/uploads/1/3/1/0/131070109/gorajujekotinuvizozu.pdf
    • http://files.simeonsolomon.com/uploads/1/3/2/6/132681293/nitolezekijomu.pdf
    • http://xenijudal.newbedfordlx.com/uploads/1/3/1/4/131406269/db82e4abb.pdf
    • http://files.jdbscholarship.com/uploads/1/3/1/4/131454158/b8af219.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://baa26711-e0df-40f2-a0be-53ba9d05fb96.filesusr.com/ugd/70e7d4_ee0af766af1549059c1b6360a8893752.pdf?index=true
    • https://c5a37c0e-a7b5-4f57-9981-2b4a9117a985.filesusr.com/ugd/227d0f_c78f8a6bbde64fb3bc62cd5a5a6838f3.pdf?index=true
    • https://77ff3283-388f-4047-b3ab-7f5162c05dcd.filesusr.com/ugd/b0cd75_f1de9973b7d241e587aeaaa2b1d6a733.pdf?index=true
    • https://4bcab4ea-a508-441c-93d2-f4d4592ecb54.filesusr.com/ugd/771ea4_4218147b71fe46018b4fb0564e06cb6d.pdf?index=true
    • https://320e61b3-42c2-487d-b714-aba9a5f35706.filesusr.com/ugd/b926a8_e541a5883f594d5a95a045603bc1b543.pdf?index=true
    • https://a09b8751-affe-430f-a842-7957a58a16e4.filesusr.com/ugd/7f614e_b3459a76b96e408bb900dcd450005542.pdf?index=true
    • https://e259fb32-c6d9-420e-8d31-cfa9c776a1e0.filesusr.com/ugd/b98abb_9c794fe525ee485180765e87345d77e6.pdf?index=true
    • https://4f7c7518-1bf6-4661-9da4-404e970d70e6.filesusr.com/ugd/d5415a_acbf19cb477f4717a0843f54da0417d5.pdf?index=true
    • https://dca476b0-619f-4efe-8387-9d95b598f271.filesusr.com/ugd/221eaa_e7edfd02caec40ffbafa0f68de61d047.pdf?index=true
    • https://cce26f99-4045-4818-9c58-10d02d5a12ad.filesusr.com/ugd/2c8d66_2e0d796412fa4d85b2297afff22a9283.pdf?index=true
    • 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_off00005847.bin
e8eb1ab4b1ae25f6b43d287243e32d095396d0b13b2d72fc5af0b4e1bbe0ecfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5847 4752 bytes
font_01_sfnt_off0000688a.bin
94f0842f998c4d9280b7065a8617b37340fa2bcfd8e4e9fa5643e662cfa955e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x688A 10376 bytes
font_02_sfnt_off00008c10.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C10 4324 bytes

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