Malicious PDF — malware analysis report

Static analysis result for SHA-256 a937832b216726d8…

MALICIOUS

PDF

69.9 KB Created: 2021-02-27 08:38:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d55559d9a80314cb8dcf3faf0c97c174 SHA-1: 25c7eeef052f67d939569df95f393a3fb0c02d49 SHA-256: a937832b216726d86d688b64c1933f1304aa4e5572fc991e2cbf05690554b631
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://lozipotod.ru/aws?utm_term=el+pollo+rico+nutrition+facts PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377408/normal_60000a69c9479.pdfIn PDF document text
    • https://cdn.sqhk.co/danajuva/hdjjlgj/wwe_undertaker_news_update.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/ngjifhg/wapakoro.pdfIn PDF document text
    • http://pefipegukanijel.22web.org/how_to_connect_sony_wh-1000xm2_to_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/muxaferamet/2J3xBTF/homescapes_game_full_house.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409411/normal_5fe974e60ce06.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/xupovobejanam/captain_underpants_pumpkin_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/kujibutoborogalax.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/game_wala_game_karo.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/zidowajutig.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/species_reference_sheet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/74088110437.pdfIn PDF document text
    • http://zuwarikufaz.epizy.com/akra_lai_lai_remix_song.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/biberiwegeno.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/lowasutad.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_off0000d428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD428 4964 bytes
SHA-256: f6579e36f9846ad2369bed3f245eef39f09b1d5eb26be7609c6b08cb1398eec4
font_01_sfnt_off0000e51f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51F 11196 bytes
SHA-256: d01fca4fb9f763ad691ef672d9eedcdf073d8bb49cda568c62f0957c70cce8d0