Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ce64a3071e18ae5…

MALICIOUS

PDF

80.2 KB Created: 2021-04-01 05:34:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8be790b9cf77a62ee34b16b37068da0 SHA-1: e0d2d55794ed58913b7b80e942e7d09179f65ca6 SHA-256: 3ce64a3071e18ae5c80eae95875c0a0457f1053ebfac815a33aea41d42363376
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous external URIs, many on disposable hosting and using UTM parameters, suggests a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains references to search terms and application metadata, consistent with a lure to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/strik?utm_term=is+primal+kitchen+bbq+sauce+keto
    • http://rolivazugatar.scienceontheweb.net/does_hypersecretion_of_adh_cause_high_blood_pressure.pdf
    • http://arm-watch3.club/18076989609grnwh.pdf
    • http://fawikenaxalu.scienceontheweb.net/xemitojat.pdf
    • https://cdn.sqhk.co/jagapifa/jgifhcC/easy_thai_red_curry_recipe_with_paste.pdf
    • http://bigever.iblogger.org/zonilibesalupukidisase.pdf
    • http://tudagizix.22web.org/why_walmart_failed.pdf
    • http://sait-ok.ru/toro_lawn_mower_carburetor_diagramrho54.pdf
    • http://phrensy.co/zora_neale_hurston_their_eyes_were_watching_god_plotuhe8b.pdf
    • http://tafiwon.mywebcommunity.org/60011034058.pdf
    • http://vopugixeroramox.medianewsonline.com/60249186681.pdf
    • http://graatorama.space/zisevavupapumepugepar8jux.pdf
    • https://cdn.sqhk.co/suxepemup/G5jcip8/86604192160.pdf
    • https://cdn.sqhk.co/xekejegixawo/Vmgfiii/playstation_4_pro_console.pdf
    • http://fonixeguga.mywebcommunity.org/51696633637.pdf
    • http://rewita.fun/sony_bdp-s590_lockedllhue.pdf
    • https://cdn.sqhk.co/fovuxugo/vTjjIHG/highway_rider_old_mod_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/xabalaru/stage_1_hypertension_guidelines.pdf
    • https://s3.amazonaws.com/jawusawar/amazing_grace_piano_sheet_music_easy_free.pdf
    • https://s3.amazonaws.com/zalisujezajaje/baby_mama_movie_parents_guide.pdf
    • https://s3.amazonaws.com/pogolo/9154416187.pdf
    • http://daximogosamov.myartsonline.com/vewuvuxofe.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_off0000ebbf.bin
2c305fb1d2c056aef8b861ef862f966ca134ed6d176a7bfeb687c77dd85a94aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBF 5324 bytes
font_01_sfnt_off0000fd9f.bin
9192c9965f541496d7c5a61e7559e538d0f3d4efca94b91e6f5abe3f2a622556		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9F 11132 bytes
font_02_sfnt_off00012377.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12377 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.