Malicious PDF — malware analysis report

Static analysis result for SHA-256 0464f5e48daf9d80…

MALICIOUS

PDF

68.4 KB Created: 2021-03-01 09:05:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 8ef43fd9f876d41df52ca5179a134bdf SHA-1: 6de65c4dc0e20350449e1dd8447720034ac9dabd SHA-256: 0464f5e48daf9d80d74d46d96f6010db4b1a12ac1afa8db96bce1664c598c212
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and a machine learning classifier, with heuristics indicating the presence of an external URI. The document body, though partially garbled, suggests a lure related to job searching. The embedded URL points to a suspicious domain, likely serving as a phishing or malware distribution point.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=delta+direct+staffing+louisville+kentucky PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449177/normal_5fdecc6ccceef.pdfIn PDF document text
    • http://idem-peshkom.ru/words_their_way_syllables_and_affixes_sortsrpp33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444647/normal_6037cd960c150.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500670/normal_5fdeb41abdccc.pdfIn PDF document text
    • https://cdn.sqhk.co/jajotulix/ijNjNOr/20718182588.pdfIn PDF document text
    • https://cdn.sqhk.co/rijujonakuje/XihXhbn/wemikakegov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447265/normal_603c8a4c000e4.pdfIn PDF document text
    • http://delayikapy.xyz/bafemipuxitelinoradageji935c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413462/normal_5ff2730602ffc.pdfIn PDF document text
    • http://francobusiness.com/number_line_integers_worksheetc09bk.pdfIn PDF document text
    • http://indir-kazan.com/84895147825xdal8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481676/normal_5fe1d82042812.pdfIn PDF document text
    • https://cdn.sqhk.co/posaleren/jmjdigP/zijipunow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_602de9c8e9e6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380088/normal_5ffc30691c332.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410432/normal_5fcef73619036.pdfIn PDF document text
    • http://legko.travel/civ_6_seowonal60d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ce26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE26 5412 bytes
SHA-256: 111ae9402d11256adda9c9f4be64c9a239fe86d8ba1329e5f53f1da94fdc4f97
font_01_sfnt_off0000e0b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B8 10404 bytes
SHA-256: 34c0d7948476eceaac2e0c238c31f9deaf6f09387a6dd26020743c71d300fd4d

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