Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f4298e73b1761e…

MALICIOUS

PDF

92.3 KB Created: 2020-08-10 03:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0876576f87893cfa68c98d6bf0c87deb SHA-1: c31bd4955305eb281ddfa74583858a9b4cb56051 SHA-256: 98f4298e73b1761e0769be220cd6ab7fc93061fd87612075844cacade9ede8e8
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as a map. This redirector is likely used to funnel victims to a malicious site or download further payloads. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent.

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.cc/pify?keyword=berlin+u+bahn+s+bahn+map+pdf In PDF document text
    • http://files.emberlight.co.nz/uploads/1/3/1/8/131872273/d0225b20a111929.pdfIn PDF document text
    • http://xosama.venkataramangroup.org/uploads/1/3/0/8/130873851/rejavurufadiri-rurejaxa-pobilad-kiwakud.pdfIn PDF document text
    • http://files.hamptonalumniatl.com/uploads/1/3/1/4/131453645/6696568.pdfIn PDF document text
    • http://files.evdccs.com/uploads/1/3/1/8/131856672/6953519.pdfIn PDF document text
    • http://files.allenhuang.org/uploads/1/3/0/7/130738823/kurered.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/1/0431/5037/7120/files/42573503906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2825/6680/files/45803451420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0007/0307/files/sopekusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56346524494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/gemuweriniwozasadigoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/ronco_showtime_rotisserie_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31240515614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/1978966772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/already_still_and_yet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3616/4774/files/95335348093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/21017200798.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off000112f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112F5 5472 bytes
SHA-256: aa937464a926c9e5b4fc7666f2271fc8a2a28abea285b507d82cea0eb0214171
font_01_sfnt_off0001255e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1255E 11844 bytes
SHA-256: e5bba273acccd75961c253cf97a82da33a3ec92c0deb8abd3c633e43642dc215
font_02_sfnt_off00014ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CE4 16180 bytes
SHA-256: 70fd880a832187ea228bdebe56c8c7cb04f63ea63b694c382ca0baec40b8a3a5

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