Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a847f5468bf2b2a…

MALICIOUS

PDF

39.5 KB Created: 2020-08-17 04:26:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a5fde3b894b49754c12e453b1296b3a SHA-1: d6d2fbf9c224dd58b055c5c7ac1fe76cf3d8beb1 SHA-256: 6a847f5468bf2b2af53de5e8593c8bbb553682fdb3912e3e65438626ac375414
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. This suggests the document is part of a link farm or SEO poisoning scheme designed to trick users into clicking malicious links, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=answer+sheets+of+upsc+toppers+pdf In PDF document text
    • http://files.glasloughtidytowns.com/uploads/1/3/2/8/132815767/subaxe.pdfIn PDF document text
    • http://tuzave.roamsoshal.com/uploads/1/3/2/7/132740405/wajepub-mopeladubafutox.pdfIn PDF document text
    • http://files.festivaledelio.com/uploads/1/3/0/9/130969514/2757115.pdfIn PDF document text
    • http://files.robinkinney.com/uploads/1/3/0/9/130969811/eeb2d17e34.pdfIn PDF document text
    • http://files.annishealinggarden.com.au/uploads/1/3/0/7/130776864/kuxafixogudaruwuje.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/1/0431/6535/2095/files/muzibekojoluxanutazawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9912/7959/files/apprendre_l_anglais_debutant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6517/0334/files/53911943500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8610/9086/files/chemistry_in_action_freemantle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/satodegojoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6910/4540/files/80260204705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0654/0445/files/junior_business_analyst_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4717/4812/files/47641430051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/fitefikozutizenegono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6983/2354/files/kexorijuvuvapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/fonurulatovofuzaworinesop.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 8

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_off00005e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E41 5084 bytes
SHA-256: 8dd644cb182417f5fde50eeb6378a783f533868be71fe4878a2a9fabd3f93638
font_01_sfnt_off00006f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F96 9804 bytes
SHA-256: 30a190762c068fbd1ac2097cc4ced64a7b4e3adfc30f2ac1225ef323bc02adcf

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