Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a518de7fcda586…

MALICIOUS

PDF

45.0 KB Created: 2020-08-02 20:28:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67705e37b3474366f42bc64f1625f849 SHA-1: d399ecbb2490b5cf5be6cd34d4b5a244af32d77c SHA-256: c5a518de7fcda586c58287a8cf6f8bf704c9fc39893cf375ef91ee23f0dbd476
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=eastern+state+hospital+jobs'. This URL is presented within the document body, disguised as a job opportunity. The file also exhibits characteristics of a link farm, with numerous embedded links, many hosted on shopify.com, likely to obscure the malicious redirector. The primary intent appears to be social engineering users into visiting the malicious redirector.

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=eastern+state+hospital+jobs In PDF document text
    • http://files.born2go.net/uploads/1/3/0/9/130969776/supep.pdfIn PDF document text
    • http://files.diversityunitkncirg644.com/uploads/1/3/0/9/130969448/wuloju-xoxawojidapu.pdfIn PDF document text
    • http://files.qreativestudios.com/uploads/1/3/1/6/131607093/88eefb0.pdfIn PDF document text
    • http://files.keepanopenmind.net/uploads/1/3/0/8/130814642/354913.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/1/0440/7564/7128/files/12472554191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/who_wrote_the_ffa_creed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/62540985902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/mekutanetokuzuzemur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/14621156255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/48547826896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/87689201100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/polutamimojamexajosilekaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9037/8901/files/puwafawunutabosazirigoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/14228533649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/pugefog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/planar_handbook_3._5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1198/0964/files/jepewodapexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4032/5282/files/xedixemakaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/deninosuwux.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_off000063a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A6 4868 bytes
SHA-256: 3f2cddbdd2bb7ae1a6dddc3021f413c1b80f352347449df506c6ef14c374181c
font_01_sfnt_off00007413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7413 10676 bytes
SHA-256: 70c31cdc45acb4a4cba065d1cae380461146a48eb91db98c2ab0e0f0729fb254
font_02_sfnt_off0000988e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x988E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3