Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d77990fddf9349…

MALICIOUS

PDF

48.1 KB Created: 2020-08-14 03:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eaddb129a3f40fa23c49a937685b3d8c SHA-1: ffd7b6af39a9d787533a12529bb465f764ff4889 SHA-256: f3d77990fddf93499d5457eb1f9858b78a1af4d718a8994e4e8fe7d562c4de8c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a redirector, which is a common tactic for delivering malware or phishing pages. The document body, though heavily obfuscated, contains text related to 'Acrobat professional free trial' and a URL that strongly suggests a lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a malicious redirector. The ML classifier also flagged this PDF with high confidence.

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.ru/pify?keyword=acrobat+professional+free+trial In PDF document text
    • http://files.volunteerhainesjunction.com/uploads/1/3/1/0/131071019/d2682cb5.pdfIn PDF document text
    • http://files.margueritelacorte.com/uploads/1/3/0/8/130814172/wekux.pdfIn PDF document text
    • http://files.six-tech-usa.com/uploads/1/3/0/8/130814043/gijarotol-vodefil-lujapo.pdfIn PDF document text
    • http://jazokesaf.isaiahtremainebooks.com/uploads/1/3/0/9/130969744/zapuror.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://cdn.shopify.com/s/files/1/0431/6017/4754/files/30209347723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5144/9496/files/wanizexujota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3002/0247/files/1869369806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/dominos_uk_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/valasupuxuzitete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4642/4991/files/xemimekenexozedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1921/3727/files/telescopic_banner_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/nojovef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/32017448020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5872/5015/files/35031328726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/gotedegezexiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4977/0408/files/xezokefewelalumar.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_off00006f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F97 4928 bytes
SHA-256: 8b6124d67a6ad7194eb6001490308447c311a404c4425713888d2f71f5f76dba
font_01_sfnt_off00008054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8054 10836 bytes
SHA-256: ef90221a918adefc7f3bbdd606a7dbec849e3d729b77f9585b37205fcba9f898
font_02_sfnt_off0000a567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA567 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378