Malicious PDF — malware analysis report

Static analysis result for SHA-256 0df68682ba8b93bf…

MALICIOUS

PDF

58.6 KB Created: 2020-08-21 09:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e9ec929ac7171b4d31bdbe8201e2ea6 SHA-1: 31ccde9523da81adb836ccb5bc08e7d3a3871bb0 SHA-256: 0df68682ba8b93bfb059f80813d2a9f8a96ab08bcc6d8fd3a597c01f224d71a1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to an SEO redirector service (ttraff.com). The document body and heuristics indicate a link farm strategy, likely designed to trick users into downloading further malicious content or engaging in phishing. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=organizzazione+di+cemento+armato+pdf In PDF document text
    • http://files.messydogkato.com/uploads/1/3/0/7/130739519/pibovufeto-sexigabuve-pafirigobi.pdfIn PDF document text
    • http://files.thelittlethingsilove.com/uploads/1/3/1/4/131410747/8549308.pdfIn PDF document text
    • http://files.studyismybuddy.com/uploads/1/3/1/4/131438848/burik.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/1/0434/2041/8198/files/strength_of_materials_notes_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8984/5667/files/85251179286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/tutije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6063/3493/files/juwavoguvabululitowef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/vawesoxoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/archaeologies_of_sexuality.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9639/files/suwegav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/nasinigibawugep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/vezofubujuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5562/files/5630864625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0957/8907/files/19925475436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/sevefezabifotijumuziv.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_off00008f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F30 5340 bytes
SHA-256: afaa310e36282285090cef6af9c7a4d5f3ee08bc53237acb550e8646411bbc41
font_01_sfnt_off0000a14c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA14C 11520 bytes
SHA-256: 19e27140552571e819eec3ed0c6ca0877e552398fe6b6a5edb72560c25a0ea02
font_02_sfnt_off0000c6e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E7 16060 bytes
SHA-256: 713933360072c9d59346590fad668f98c3603c6d2b72ed941ce85481f6af0b74

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