Malicious PDF — malware analysis report

Static analysis result for SHA-256 d91fdc904b61a947…

MALICIOUS

PDF

112.6 KB Created: 2020-08-10 19:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66da3c81b722286dcc7335ae9c690809 SHA-1: de5f8c2258ee590250eca4b7e099b0363a5a7176 SHA-256: d91fdc904b61a947342659f17d6eef1133445f5ad41d9c8061f0cbe44e8fa13b
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this, indicating the document's primary purpose is to redirect users to a harmful site. The PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, likely for SEO manipulation or to obscure the malicious destination. The embedded URL 'https://ttraff.com/pify?keyword=jorge+luis+borges+borges+and+i+pdf' is the highest priority IOC.

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.com/pify?keyword=jorge+luis+borges+borges+and+i+pdf In PDF document text
    • http://files.southhastingsbaseballleague.com/uploads/1/3/0/7/130738841/9338977.pdfIn PDF document text
    • http://files.dpnutritionandfitness.com/uploads/1/3/0/8/130874042/2682732.pdfIn PDF document text
    • http://xuzugiwa.athomerochester.com/uploads/1/3/2/7/132740930/zutalil.pdfIn PDF document text
    • http://tunel.sunshinecoins.com/uploads/1/3/1/0/131070374/c4a8007f0197368.pdfIn PDF document text
    • http://xuliwu.audsnanns.com/uploads/1/3/1/6/131606349/fa3540dfcca8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/56641541412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/playboy_swing_season.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/65187480700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6960/2978/files/xemolesisonanikurapasuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6653/8649/files/14773216393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/98834316688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/gary_leal_advanced_transport_phenomena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7248/6566/files/nutatabefadalewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5648/0935/files/fubodeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3616/4774/files/love_dare_for_parents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7378/8321/files/umd_campus_map.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17ECB 5336 bytes
SHA-256: 5ac0fdace69fdcd9d425ff579ecc4158a44cee4cf75ed0990bd2cf7891fc8e40
font_01_sfnt_off000190f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x190F9 10492 bytes
SHA-256: b92043a029926de4ec64f586ff35c7d15fd5e27df10fdc6b798b82bf2a525bd1

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