Malicious PDF — malware analysis report

Static analysis result for SHA-256 86850afd75709754…

MALICIOUS

PDF

53.7 KB Created: 2020-08-19 08:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f27f8e7cde621bb234668eec6d883ef SHA-1: 371aaae1b86aece303a5e0fe79e162e48075a1bd SHA-256: 86850afd75709754efaed808d678f4fea75ad94f0de6d18b070e10ffb204b5da
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that appears to be part of a link farm for SEO-based phishing. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=star+wars+movies+free++in+tamil', suggesting a lure for free movie downloads. The presence of multiple PDF links and a critical heuristic firing for 'PDF_MALICIOUS_REDIRECTOR_LINK' strongly indicates a phishing attempt.

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=star+wars+movies+free++in+tamil In PDF document text
    • http://lotizoku.tylerbiology.com/uploads/1/3/2/3/132302780/sesotalusixekutudit.pdfIn PDF document text
    • http://gekilew.srphotographymelbourne.com.au/uploads/1/3/2/6/132695675/5504901.pdfIn PDF document text
    • http://felemo.alaskasummerinstitute2020.com/uploads/1/3/1/4/131453674/c1d1723.pdfIn PDF document text
    • http://files.thebrooklynbarberacademy.com/uploads/1/3/1/3/131398362/4a55f85be9edc.pdfIn PDF document text
    • http://zuvumowu.heremans-ceusters.be/uploads/1/3/1/3/131382274/gotukuxidevo_wawojelanegi.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/1/0434/2130/2946/files/davaxalisexogoraropuvux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5428/5479/files/stardew_red_cabbage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/57377327792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/felavar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/vegijijoxusanaremidamak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/interview_questions_for_bca_freshers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/wrong_turn_7_release_date.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6087/7729/files/difference_between_curriculum_and_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/sikozebegojogitexabewidag.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0A 5168 bytes
SHA-256: 698ea29dddf434b6a3a03b57efeaf6334a83410dd1a6546c52c2f442fa73eb7a
font_01_sfnt_off0000909b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909B 10308 bytes
SHA-256: 326d0d42d65bd375d5b55f390517efcfbd0b26c7f54453d7c43ce94769d7d0de
font_02_sfnt_off0000b40e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB40E 16260 bytes
SHA-256: 8a5952d5e0a00225290cd07651d95d4b925f77f9bc8e82fe8dc29a71fb1668d5