Malicious PDF — malware analysis report

Static analysis result for SHA-256 17aac62202030753…

MALICIOUS

PDF

45.2 KB Created: 2020-08-23 04:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d39deaf23793fcd25c7d8f10099313bb SHA-1: deecbff0ee56268321ab406e53712bfcb4b1dcc0 SHA-256: 17aac62202030753c51314d72b0d51eda1872209dac52531dde0b648b3478d17
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service at 'ttraff.ru'. This service is flagged as malicious and is used in conjunction with SEO link farming tactics to disguise phishing attempts. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to trick users into downloading potentially malicious content under the guise of study materials.

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=best+asvab+study+guide+for+navy In PDF document text
    • http://files.moonbouncerentals.net/uploads/1/3/0/9/130969305/lupugufogoja.pdfIn PDF document text
    • http://files.yggllwyncelyn.cymru/uploads/1/3/1/4/131453365/1764739.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/1/0454/0868/2152/files/85255115965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/advantages_of_internet_in_business.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8341/4169/files/kosagezeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2286/7880/files/94926173947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9950/5311/files/investigative_consumer_reporting_agencies_act_california.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/tv_listings_san_jose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1378/2178/files/20028419229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/against_all_odds_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/93805778744.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_off00005d10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D10 5392 bytes
SHA-256: 02a4e446a2da3c935e9a82f0d9f9ea50e1a6ddfb430b98f2e9e4c4467dd0c68b
font_01_sfnt_off00006f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F80 10396 bytes
SHA-256: 0cfa434104735ee55051f7ff570527587fb4dc223ca54fb2772d39116d3a5156
font_02_sfnt_off00009346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9346 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848

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