Malicious PDF — malware analysis report

Static analysis result for SHA-256 372858a4957dcd91…

MALICIOUS

PDF

49.5 KB Created: 2020-08-09 00:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5e39c7a0ae22bcccc17684d76613dab SHA-1: 50cb6bcb926706b1e6bf48051ac28e435defad7f SHA-256: 372858a4957dcd91133076ad49e482563321cc28f774e81854dbae745b68c244
194 Risk Score

Malware Insights

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

The PDF was flagged for containing malicious redirector links and a link farm, indicating a likely phishing or malware distribution attempt. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a keyword that appears to be part of a SEO spam campaign. The document body contains garbled text but includes the malicious URL and a benign Shopify URL, suggesting an attempt to disguise the malicious content.

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=bricks+intensive+reading+1+pdf In PDF document text
    • http://files.pennjournalconlaw.com/uploads/1/3/2/6/132682694/bawibixijuzawo.pdfIn PDF document text
    • http://files.eguastella.com/uploads/1/3/1/8/131871690/4656610.pdfIn PDF document text
    • http://files.franciscanyon.com/uploads/1/3/2/6/132681448/sigokuto_nofivapon_buviwufipiru_fowizemebuwod.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/1/0434/5144/9496/files/61347241468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/safowonevarusudijuzano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3732/6488/files/giwebatelosuxumaboje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7405/1493/files/kowagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wabodenerevugibew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/4070/7484/files/che_guevara_books_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5018/8443/files/70881948447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/95759649208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wesani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5737/3589/files/14351655482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1306/1277/files/93697398755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4197/9553/files/60316892302.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6455 8772 bytes
SHA-256: e06f5e72c62fc0c197baf6910a965aaf09773c7791e0788a7ea4b732bf1bea5d
font_01_sfnt_off000080ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AB 5516 bytes
SHA-256: 4b40530b3a58f242fd3c7b7c8656ab2a73cddb9516d97586ada5296c64ddb7a0
font_02_sfnt_off0000939d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x939D 10092 bytes
SHA-256: 04c911087fe5a7dba960dc003f3f94ce551072aee9361621b790cfd73ee34a8c

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