Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9290350995b9aa6…

MALICIOUS

PDF

72.0 KB Created: 2021-03-27 21:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 8fa14a1d07f9e5ac8f66c45f244c46c7 SHA-1: ce44bd02748232c1d2bb3f27bc60453fdd7759e5 SHA-256: e9290350995b9aa6d951d0f3947265b9cf6d3ed5877d2d18292800a81c0dcb1b
196 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous external links, including a primary link to 'https://fokemale.ru/wix?keyword=1999+nissan+frontier+repair+manual+pdf', presented as a repair manual to entice users. The PDF also features a link farm with 30 external PDF links, suggesting an attempt to manipulate search engine results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://fokemale.ru/wix?keyword=1999+nissan+frontier+repair+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/lowanivari/Ufsxhgv/report_a_human_rights_violation.pdfIn PDF document text
    • https://cdn.sqhk.co/waladoved/VOjiNhg/marketplace_foods_rice_lake_wi_ad.pdfIn PDF document text
    • https://cdn.sqhk.co/pesasotiro/Gn6Xeic/thimbleweed_park_switch_physical.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389793/normal_604b4de89b226.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/cidehbC/kasezenudodotinef.pdfIn PDF document text
    • https://cdn.sqhk.co/peluxisomex/Vjcjiie/xuxopopex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367294/normal_5fe315f3c89f8.pdfIn PDF document text
    • http://xonibiz.22web.org/bournemouth_football_ground_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pujirageg/editable_housewarming_party_invitation_template.pdfIn PDF document text
    • https://c4bedd8b-a3e9-4aa8-9751-a6fde4035b7e.filesusr.com/ugd/037f08_081f052c546a46dcb40366e34ecde2ca.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/free_music_to_itunes_library.pdfIn PDF document text
    • https://1237a3da-0b33-4890-9ba9-974507bf2590.filesusr.com/ugd/3e0cb9_889d877e0a7b4aca8ec042e69aec93b6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/formal_dress_hire_melbourne.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/tiparadifitubowok.pdfIn PDF document text
    • https://ffb80149-315c-4936-8637-e87477b606fc.filesusr.com/ugd/e7410d_48ad200e5fcd42dfa1d026d2090a9e5c.pdf?index=trueIn PDF document text
    • http://setiwol.epizy.com/on_my_way_song_mp4.pdfIn PDF document text
    • https://3d7304b5-8527-495f-b913-615d6f357a43.filesusr.com/ugd/ef7486_7312112b5e25494ebfed06381420af24.pdf?index=trueIn PDF document text
    • https://ebbb41b5-b8b7-4bfc-9e1b-23e79ad93844.filesusr.com/ugd/5eba67_deb58157e8bb4778ab89540dfd0bbed5.pdf?index=trueIn PDF document text
    • https://69cf8a46-0d3d-4b71-8fd1-93df925da18e.filesusr.com/ugd/e4064d_059f4eac5f704bb9b64f80388fbc2c41.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/falapurodin.pdfIn PDF document text
    • https://899154e9-876a-4ab4-94d5-c8ef2aed10f2.filesusr.com/ugd/dcf9ad_b5c34661cef84c67b042ddeb7af780ea.pdf?index=trueIn PDF document text
    • https://78905da9-dd21-4190-abaa-c894c042e703.filesusr.com/ugd/851c7c_dd5aa665b2544ddc828aacac7c305f84.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD01 5300 bytes
SHA-256: 9d95292775808063a60f27c60bf1775cc89a9dbcebf3c6dfceaf0dffae2b59fd
font_01_sfnt_off0000eef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF6 10184 bytes
SHA-256: d13aaf855e0dc72e36336b6b8637b61670c55c3533dd464ae92774fa98c9b3a8