Malicious PDF — malware analysis report

Static analysis result for SHA-256 34cf9597d2577db8…

MALICIOUS

PDF

49.3 KB Created: 2020-08-04 00:01:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6dc5f64f398522a9a803d63128448e48 SHA-1: 5c8c15e79f006ef29d658865f9d631167e59bf23 SHA-256: 34cf9597d2577db8f88af94a248f5b710800453e63e71007cdd7c078ed2e9282
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The primary heuristic indicates a malicious redirector link to 'ttraff.ru', which is likely used to funnel victims to malicious sites. The document body, though heavily obfuscated, also contains the same malicious URL, reinforcing the attack pattern.

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=walden+thoreau+pdf+gratis In PDF document text
    • http://files.artistonabike.co.uk/uploads/1/3/1/0/131070458/192754.pdfIn PDF document text
    • http://files.trattoria89.com/uploads/1/3/2/7/132740362/rodezimedizoret_wopulod_wivos_wularuxev.pdfIn PDF document text
    • http://files.darylgove.com/uploads/1/3/2/8/132816165/1972985.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/1/0433/8450/4474/files/jedenalokonilewoguxalib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2559/4530/files/76346480355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3901/5580/files/ledijajupiwenutifasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/lirapivafilil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6955/2293/files/katomofujojukiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/birizakidunupujudexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5357/9430/files/96911435503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/visaboxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4505/9749/files/15382997089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/nodelokopimufepuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/56579210938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4478/1735/files/sepusuzaworunanubuxizam.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 5

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_off00008378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8378 5316 bytes
SHA-256: 994c3625c04f765bd2cc9d4de47cd65d6b58db2e3bc30a0dd34d720dfbd636ba
font_01_sfnt_off00009596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9596 10208 bytes
SHA-256: ccd94d5d86be01ddb441ad092a243392eda66331fb8d076ab379d477cd93683b

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