Malicious PDF — malware analysis report

Static analysis result for SHA-256 dec1abebae9a2ee0…

MALICIOUS

PDF

34.7 KB Created: 2020-10-30 13:41:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: e927d10fdba77fa91ec13359a6d00ffc SHA-1: bd26f226d6c9c1ec035ed434c501ca4d51c88010 SHA-256: dec1abebae9a2ee0c9341a8b23025fcbbe6a97cee81ebb4e49621786c0b00738
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://ttraff.cc/pify?keyword=megaman+x+zero+wallpaper In PDF document text
    • https://tabuxeniki.weebly.com/uploads/1/3/2/6/132682737/lireruze.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/sojaxub/sijoxal.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/patugitumumonezunamej.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/16673454752.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/vujelerogoto.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/arduino_mini_schematic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5472/5802/files/87016524217.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/xebiditumumitat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2906/0001/files/21605729985.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/how_to_build_a_pc_step_by_step.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/9982431793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4959/7087/files/walil.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/the_accursed_share_volume_2.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/beats_pill_xl_best_buy_canada.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_off0000494d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x494D 5176 bytes
SHA-256: 96df5eb3ba4bc2d75c8fdcc2ffa89c070a93e04c8322aecff84a1c389a54be6f
font_01_sfnt_off00005afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFE 10392 bytes
SHA-256: 1a927e0786a80356ba64ae2a1efcb64d00664838ae1caf7d1feef0df6d8bddae