Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1c3619fb63e4160…

MALICIOUS

PDF

61.0 KB Created: 2021-02-19 01:11:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d88bf669c1e477b0f89ddb22d9202536 SHA-1: 8466337f9247195e432819cf4869250dfc6850c4 SHA-256: f1c3619fb63e41607a9d4566f34048459a4558d3b0890c9962e94deee5cd8364
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wix?keyword=briggs+and+stratton+shop+manual PDF link annotation
    • https://cdn.sqhk.co/rusefijow/bhbzazX/funny_videos_of_dogs_and_cats_dancing.pdfIn PDF document text
    • https://cdn.sqhk.co/febenapox/LOhcKgg/tezowemumupisizuxa.pdfIn PDF document text
    • http://lojasamericanasbr.com/guxefunigihfouv.pdfIn PDF document text
    • http://autobaff.xyz/curriculo_nacional_2019_secundariavtyg6.pdfIn PDF document text
    • https://cdn.sqhk.co/salusasopuvi/Xhegxjc/56592374517.pdfIn PDF document text
    • https://cdn.sqhk.co/butemobe/NibQjcw/standoff_multiplayer_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/ghaERuR/rumble_johnson_2020.pdfIn PDF document text
    • http://fitokapss.xyz/zusaxigokedetayobuh.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelemusib/migdifE/stickman_rope_hero_2_mod_unlimited_money.pdfIn PDF document text
    • http://iranianvc.com/gogowisivugear.pdfIn PDF document text
    • https://cdn.sqhk.co/dedizajo/vgggjwT/do_simple_to_do_list.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/kumasala/ap_calculus_ab_worksheet_24_linear_approximation.pdfIn 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_off0000b342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB342 5420 bytes
SHA-256: a5d2344b5a0f7ec38a73189c44eb1660c2b49c69e6de4ce938cfb75105151a2d
font_01_sfnt_off0000c585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC585 9908 bytes
SHA-256: fc431720dc99499f9ecd730fae1addf60ecf67de7054bd415e65809d46ff156b

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