Malicious PDF — malware analysis report

Static analysis result for SHA-256 34b998ef3f79e52f…

MALICIOUS

PDF

70.7 KB Created: 2020-08-06 03:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94f65e5bcb6102605e57ae997ae726d4 SHA-1: e707862199f46cbcdf413add3c2f1c840695aa87 SHA-256: 34b998ef3f79e52fbf2354273ceec8118be7ffaf561298416ade2f490dacfbba
194 Risk Score

Malware Insights

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

The PDF file was flagged for containing a large number of external links, indicating a potential link farm or SEO manipulation tactic. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=blog+de+libros+romanticos+adultos+pdf+gratis', is identified as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect users to potentially harmful 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=blog+de+libros+romanticos+adultos+pdf+gratis In PDF document text
    • http://files.urepabroad.com/uploads/1/3/1/4/131437503/vuxozugefimak-vedarunosa.pdfIn PDF document text
    • http://files.mungerink.com/uploads/1/3/1/0/131070918/37afc82d3233.pdfIn PDF document text
    • http://files.panisangelicuspress.com/uploads/1/3/1/3/131384018/7094245.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/1/0430/7582/9911/files/pleasure_p_boyfriend_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1962/2808/files/82164241750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/manititag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4138/2812/files/wenifusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7679/6057/files/lipakubilatewebejaboxizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9480/2581/files/89216425212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/13316238986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3933/2251/files/deselupubolis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6086/2874/files/jorukukajowalu.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_off0000d338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD338 5664 bytes
SHA-256: a2cfdd565079a972915e17d1bda390a2d4d0a0cecc82372702e2391c9efa66d5
font_01_sfnt_off0000e663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE663 11476 bytes
SHA-256: 030ca4ef4239c1fcf9bd16637a428f4986bc9ecb406803432eadc041a1a6efac

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