Malicious PDF — malware analysis report

Static analysis result for SHA-256 d39c2fa05cfb972b…

MALICIOUS

PDF

40.9 KB Created: 2020-08-23 05:26:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 98227617ec40adedc5f3631d9176bfc0 SHA-1: 8d6056890f7e8e6b860e57f34a105ce2d609b3bf SHA-256: d39c2fa05cfb972b43ece5edda454ef6f07ad67dad58ea8630426a3e5ec40f21
202 Risk Score

Malware Insights

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

The PDF contains a high number of external links, with a critical heuristic firing for a PDF link farm. One of these links points to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination. The document body contains garbled text but includes the URL for the malicious redirector and a benign-looking Shopify URL, suggesting a lure to external content. The presence of urgency language further supports a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=accident+reporting+centre+toronto+locations In PDF document text
    • http://files.mooneyeshawaii.com/uploads/1/3/1/3/131398286/towok.pdfIn PDF document text
    • http://files.thepastoralartist.com/uploads/1/3/0/8/130874524/dupizimiv.pdfIn PDF document text
    • http://megofovu.getbeand.com/uploads/1/3/1/6/131606782/mukuxota.pdfIn PDF document text
    • http://vukasefap.super-sounds.com/uploads/1/3/0/9/130969280/4124705.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/1/0432/7401/0782/files/63851647530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1540/3682/files/bootstrap_register_form_html.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/zorofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/26920626603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/java_foundations_3rd_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8267/0485/files/4450464240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0886/0065/files/sownictwo_tematyczne_angielski_matura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/xutalajazorokofudunipugis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4225/8587/files/realized_colbie_caillat_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/faxodubixinon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/12125721480.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 7

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_off000060c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C8 5232 bytes
SHA-256: 91bd621ef983b2b527e667673648898f89aea7acff44e4dc44ba24e364c2dfa8
font_01_sfnt_off00007291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7291 10484 bytes
SHA-256: 6394a22d5858f669c8511c97336ea90e4b841e4ba659db0d585b23fbbe9158aa

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