Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2448814b8e538e…

MALICIOUS

PDF

86.6 KB Created: 2021-02-28 15:08:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 03e44506e2457ae40bba2605a645c9b0 SHA-1: 929e784e80d787d4437b02289d555fa8ba7da51b SHA-256: db2448814b8e538e7464f2795d0a2737deeedbe4fd7be621f2faec5f4ed123b2
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to host or redirect to a malicious payload. The presence of a 'download button' heuristic further supports the phishing lure attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xajibur.ru/strik?utm_term=myra+breckinridge+full+movie+download PDF link annotation
    • http://dakisemakegag.sportsontheweb.net/avatar_comics_imbalance_read_online.pdfIn PDF document text
    • http://chebsvet.ru/cultura_azteca_caracteristicas17kyy.pdfIn PDF document text
    • http://vashastrahovka24.ru/769746900938n68d.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/diejhhc/good_wolf_wallpapers.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/526166477427736y.pdfIn PDF document text
    • http://ninotekega.mygamesonline.org/68186599620.pdfIn PDF document text
    • http://citruss.space/508-_507-_2209_downloadb6lzf.pdfIn PDF document text
    • https://cdn.sqhk.co/wibezudak/D5JGjjQ/pico_de_gallo_powder.pdfIn PDF document text
    • http://podipotekoi.ru/pirud6ehhf.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwunikuneg/ihgduj6/chocolate_cake_decoration_ideas_with_fruits.pdfIn PDF document text
    • http://nomenowunesazoz.scienceontheweb.net/how_to_stack_bosch_washing_machine_and_dryer.pdfIn PDF document text
    • https://cdn.sqhk.co/difakezil/fjeiahg/93217545649.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/didowugorokirug/petit_prince_ma_rose_est_unique.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/55280644517.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/51997584334.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/cave_story_3d_music.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/barbie_doll_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/4822447279.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105CC 5428 bytes
SHA-256: 4146c026fb00735a726225741424c006c0857674bc4b015a45ac99d0436ab573
font_01_sfnt_off00011847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11847 11440 bytes
SHA-256: b59c44d4cff83d2f73bffe374054d4a6cac0bce6d7db26d148db430ab6569a7c
font_02_sfnt_off00013e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E79 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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