Malicious PDF — malware analysis report

Static analysis result for SHA-256 899c30a2bc45baae…

MALICIOUS

PDF

79.6 KB Created: 2021-03-19 08:42:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24aed3ac4de116fd6d33e47b7bf51a0b SHA-1: 8c6d84f83478ca24b41404e121d8b1729859b03a SHA-256: 899c30a2bc45baae7537f23d61b842a8f48f7ea42edbd83e1aeccd802c4c673a
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, which is a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, appears to be a lure related to search terms, directing users to a potentially malicious external URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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://xezojetit.ru/wix?keyword=felt+oil+seals+uk
    • https://cdn.sqhk.co/gonaxetuped/Rgbginp/jutefodajijetusufiwe.pdf
    • https://cdn.sqhk.co/sixepatexup/3Ehfjna/runodewaguvasiko.pdf
    • https://cdn.sqhk.co/nozelenid/fidhbge/idle_army_tycoon_apk_mod.pdf
    • https://cdn.sqhk.co/busunava/g9digfq/interior_design_ideas_brown_leather_sofa.pdf
    • https://cdn.sqhk.co/joxomawezu/eOge5jj/daily_checklist_template_microsoft_word.pdf
    • https://cdn.sqhk.co/gikiwifada/hcfiajg/zubevajevewotu.pdf
    • http://mujoxoluvisukid.getenjoyment.net/38453812713.pdf
    • https://cdn.sqhk.co/rowubuvuke/hUgegd9/mule_deer_antler_scoring_sheet.pdf
    • https://cdn.sqhk.co/bupewazadufa/9ED1ids/denonizomiwoligamefixi.pdf
    • http://jelolizabuvixi.22web.org/imperative_definition.pdf
    • http://fejukoturig.medianewsonline.com/how_to_adjust_a_carburetor_on_a_2_stroke_engine.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fuxewon.epizy.com/28725228923.pdf
    • http://siriwupesi.epizy.com/think_of_me_lyrics_phantom.pdf
    • https://s3.amazonaws.com/jolunenafobuw/demon_hunter_pvp_guide_8._2._5.pdf
    • https://s3.amazonaws.com/naxozelozude/61811330934.pdf
    • https://s3.amazonaws.com/wazotojemov/battlefield_3_mobile_game.pdf
    • https://s3.amazonaws.com/kujesulad/35717527060.pdf
    • https://s3.amazonaws.com/bewibiwat/nedisag.pdf
    • https://s3.amazonaws.com/livivuvuwugeb/macintyre_school_wingrave_ofsted_report.pdf
    • https://s3.amazonaws.com/zumomasugipeno/nijipu.pdf
    • http://xezexuro.epizy.com/teaching_english_to_young_learners_cameron.pdf
    • http://renirorevebu.epizy.com/gangster_full_movie_avi.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_off0000ed2e.bin
0b979182a5522e44a0da4a49572e6a19d26bd3362af894a305b00b5878734b4c
pdf-font-stream PDF embedded font (sfnt) at offset 0xED2E 4380 bytes
font_01_sfnt_off0000fc18.bin
2af7dec9c5f0e56b076a93d64ad6dcf35deabbfdf6ba7fc9d4dcb9eb5c46b42e
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC18 11120 bytes
font_02_sfnt_off000121dc.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x121DC 4324 bytes