Malicious PDF — malware analysis report

Static analysis result for SHA-256 779efa3edfc0b92f…

MALICIOUS

PDF

52.8 KB Created: 2020-08-08 23:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df798f971c9dc2c7ec97b1c955d873ae SHA-1: 707a8ec29f4b1f4a5870f42bbc74a9b680ac2f63 SHA-256: 779efa3edfc0b92f1899aa4a30a7d35c74849ee078268a6842f313ed1b191072
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 (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to disguise the true nature of the links. The presence of multiple external links and the use of a redirector indicate a phishing or scam attempt, likely to lead users to a malicious site.

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=negritude+philosophy+pdf In PDF document text
    • http://files.mtdistrictcc.com/uploads/1/3/1/4/131406222/1372901.pdfIn PDF document text
    • http://files.jbarcustomdesigns.com/uploads/1/3/1/4/131437056/9012089.pdfIn PDF document text
    • http://files.sangerkatz.com/uploads/1/3/0/8/130813364/4443357.pdfIn PDF document text
    • http://files.regenerativebusinessinstitute.com/uploads/1/3/0/7/130739625/papasewazetefir.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5308/0985/files/65038503231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9046/9283/files/3902282818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/xirupip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1892/3686/files/ucla_biweekly_payroll_calendar_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7004/4825/files/ps3_controller_for_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/soxorafemawuvelutuwufekol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6539/9713/files/98072473653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7743/5556/files/prizerebel_hack_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/53912876569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/52260568630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/jelosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5353/0788/files/lunogig.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8400 4940 bytes
SHA-256: c50207f65495f93e93266e63306ef277fee2248ac9352014ca69d0937e3483a0
font_01_sfnt_off000094f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94F5 10176 bytes
SHA-256: 391ce9c1255f92b995bb9aa36b41ce38f4837950269c79692cf28bd3318609f5
font_02_sfnt_off0000b7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7D4 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.