Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7def9fea302219…

MALICIOUS

PDF

83.8 KB Created: 2021-04-10 23:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e0aaf0a2892e3130bad5be4bcb79e6ec SHA-1: ecbd0e740777731ead783b888f1bbe53b5671b99 SHA-256: cd7def9fea302219bf92a110b8d6f64172023d1a7384501d0e8e971605575322
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or distributing further malware. The document body is heavily obfuscated, but the presence of embedded URLs and the overall detection suggest a malicious intent to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/strik?utm_term=what+are+the+writing+methods PDF link annotation
    • https://cdn.sqhk.co/zarepowake/hR7ihfd/muxajebijalogojira.pdfIn PDF document text
    • https://cdn.sqhk.co/ferudati/e61nihX/vesatonetixixef.pdfIn PDF document text
    • http://istlan.fun/zesovometukasixitilare54k2p.pdfIn PDF document text
    • https://cdn.sqhk.co/sezunofubuzi/j6jcDnA/renazusiritiruj.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/eyhihdT/xuzulixipilukojiwiratiga.pdfIn PDF document text
    • http://wonder-ita.space/31610433394xwnf8.pdfIn PDF document text
    • http://get3creditscores.info/in_search_of_sisterhood_delta_sigma_thetayx1yh.pdfIn PDF document text
    • http://cetakchantek.com/how_to_configure_pi-staruzc10.pdfIn PDF document text
    • http://outputqwvk.space/subunir32fqs.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/gulapore/82359194787.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/espresso_menu_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/81669749585.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/gertrude_s_cat_quick_guide_osrs.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/jepimosaxotudapo.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/zedolefepitulukom.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/how_many_carbs_are_in_a_sonic_strawberry_limeade.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/kinderkraft_next_to_me_crib_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/is_the_intruder_on_netflix_or_hulu.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/4427823540.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/92527276183.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/new_odia_video_songs_2018.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_off000109dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109DD 5312 bytes
SHA-256: 13b548c7c1501e59d606caf1848a7618c45e6e8cd0c31324a6edba1e0a92838d
font_01_sfnt_off00011bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BDA 11264 bytes
SHA-256: 246f5e336d00114a7aae18a8023c4f9593854ba906cdb16572938e41ac7b5b4f

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