Malicious PDF — malware analysis report

Static analysis result for SHA-256 308b80256b580aa2…

MALICIOUS

PDF

68.1 KB Created: 2021-03-25 07:17:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7bdbaac5c5014175ffcb6943e0a236c SHA-1: eaa72517dd2ce520daaee116c84fbfa79ec555a7 SHA-256: 308b80256b580aa2c050c9925594debce27593af39de96cd1a54efa7fa4ffe6c
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to improve search engine rankings, with one prominent URL leading to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a TV show episode.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/wix?keyword=ab+dekh+khuda+kia+karta+hai+episode+16
    • http://varakeno.iblogger.org/19598325543.pdf
    • http://fortuneo.best/assassins_creed_brotherhood_escape_from_the_vatican_with_the_apple_of_edenac2j4.pdf
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/9ee5a224ae8fbe.pdf
    • https://pokeboxut.weebly.com/uploads/1/3/1/4/131437348/34b0eea.pdf
    • http://senteber.site/judy_garland_have_yourself_a_merry_little_christmas_2_lyricswri8d.pdf
    • http://fufivepibagat.iblogger.org/mobogenie_ios_app.pdf
    • http://ralujafinis.22web.org/71145469321.pdf
    • https://nabisomo.weebly.com/uploads/1/3/5/9/135993280/4486596b2cdc5a.pdf
    • https://dunelakanova.weebly.com/uploads/1/3/1/4/131410870/8995015.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mavixu/caras_mexico_vicente_fernandez.pdf
    • http://gabamad.epizy.com/43292717087.pdf
    • http://tudutov.rf.gd/tabla_peridica_2020_a_color.pdf
    • https://s3.amazonaws.com/wezukep/vpn_free_iphone.pdf
    • http://petirepure.epizy.com/isagenix_diet_plan.pdf
    • https://s3.amazonaws.com/xalasawu/brunnstrom_approach.pdf
    • https://s3.amazonaws.com/xakusineba/frigidaire_troubleshooting_ice_maker.pdf
    • http://tulixiwubov.epizy.com/indesign_template_free_a4.pdf
    • https://s3.amazonaws.com/nitizobuv/migabezutubexo.pdf
    • https://s3.amazonaws.com/tetenifeme/motorola_talkabout_mh230r.pdf
    • http://bonizeza.epizy.com/bodybuilder_hd_photos.pdf
    • https://s3.amazonaws.com/fejififimaketo/13997056224.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_off0000cdf7.bin
234a9ed4209245e0afa44a30f5a82cf40b9225f8c9db88c9ef4e1907ee05ca58		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF7 5416 bytes
font_01_sfnt_off0000e05b.bin
867d49a58ca8b022415c486cce9404e3ce632f64a9b9af36d9165ca032635d1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE05B 10200 bytes

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