Malicious PDF — malware analysis report

Static analysis result for SHA-256 78b8a7756873495e…

MALICIOUS

PDF

41.8 KB Created: 2020-08-02 05:02:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8dfdf5f2be09bcbde29447f7d6186e2 SHA-1: f90bbecfd17352ffa4fa2b0c546fb84e91cf0007 SHA-256: 78b8a7756873495e5b9dd669b9a0d80867d842cefdad23d5d7960c00b2c2ee0e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service that ultimately leads to the URL 'https://ttraff.ru/pify?keyword=tone2+rayblaster+vst+crack'. This suggests a phishing or scam attempt, likely using a lure of cracked software to entice clicks. The ML classifier strongly supports the malicious nature of this PDF.

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=tone2+rayblaster+vst+crack In PDF document text
    • http://files.northwoodhk.com/uploads/1/3/1/8/131871698/jesusazem-valiropoxi-somofetuxapega-migoniwo.pdfIn PDF document text
    • http://files.gyrobot.co.uk/uploads/1/3/2/6/132681910/nowosa.pdfIn PDF document text
    • http://files.yourpanamatours.com/uploads/1/3/1/4/131412032/6386831c5f8492.pdfIn PDF document text
    • http://files.carolynfordart.com/uploads/1/3/0/7/130740011/mevowowedek_duwuwaviveto.pdfIn PDF document text
    • http://files.jottnew.com/uploads/1/3/0/8/130874691/c4845f8.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/1/0428/6119/9526/files/10758097216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4691/0624/files/sonifopipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/gekoneluw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/3157727165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3210/1543/files/47536823472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/fagetibadivejovifit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1984/4258/files/jomewuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/91282776378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/19774288211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/9071557528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/duxuwanemeka.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 6

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_off0000659a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659A 5240 bytes
SHA-256: 4ca8f1e0a61b3ee41e1216148d3c120b41a1103f472254595671b17b633f49bd
font_01_sfnt_off0000778b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x778B 10252 bytes
SHA-256: 4dc3672fff86bc36d15c2944454c8504dddda34eebb9af54a5013649acfcd860

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