Malicious PDF — malware analysis report

Static analysis result for SHA-256 70d33fa89610ac0a…

MALICIOUS

PDF

168.9 KB Created: 2021-02-13 07:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba120d9d1328fc90992d0915e2ddd87f SHA-1: dd3d7c90210212e690c878d88ecef5699773f3e3 SHA-256: 70d33fa89610ac0a545eeb492aae5361d3793ff83ae2a4ff1182b2f9c9382d47
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of an external URI points to the document's attempt to redirect the user to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/wix?keyword=sailor+scouts+names+in+english
    • https://cdn.sqhk.co/jenetuwuda/s6geEgj/lavukemaje.pdf
    • https://cdn.sqhk.co/vavusiwi/I6ggihc/71389979880.pdf
    • https://vozokeku.weebly.com/uploads/1/3/1/8/131857213/8726dc58.pdf
    • http://skameyki.club/piparuwikbq8ps.pdf
    • https://tonudekosinin.weebly.com/uploads/1/3/4/6/134685286/torawivi-dejoxusawa.pdf
    • https://cdn.sqhk.co/livisade/rhojjPA/vomenuxemu.pdf
    • https://cdn.sqhk.co/tezizejaropu/iiOwjig/pakomoxasofabeminuw.pdf
    • https://satemegozujig.weebly.com/uploads/1/3/4/4/134477909/losilugufaxup_jivokopid.pdf
    • http://petrol-v-pol-price.site/zujit2gqh9.pdf
    • https://cdn.sqhk.co/xovujiroveg/heheNhh/gt_racing_chained_car_stunt_driver.pdf
    • https://cdn.sqhk.co/xedufoga/gggebia/87984811767.pdf
    • http://osmosiotzs.fun/5453202116938k70.pdf
    • https://cdn.sqhk.co/rokabumake/if1Htgf/scoop_ice_cream_cooking_game_iphone.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rakabexozu/13494990102.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001dec8.bin
2654f835824a2eda220a5b02dc685c2c00507f568bc1c87b76898629f544d866		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1DEC8 41628 bytes
font_01_sfnt_off00025f29.bin
271df7cce3fd8519fff3ee59d33b7529bfdf7f601f4df51695a63877d63b7894		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25F29 5316 bytes
font_02_sfnt_off0002710b.bin
5d0b64c6fc78e36898ed2711106044a1ecb63fd601570011dfd27ac869b6ee01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2710B 10764 bytes

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