Malicious PDF — malware analysis report

Static analysis result for SHA-256 83590946653a326b…

MALICIOUS

PDF

50.6 KB Created: 2020-07-30 20:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69415e17f4d5ff5f7127f025db8d0efd SHA-1: 31039ecac5de0ddd6bca353a8a4ce428575519d0 SHA-256: 83590946653a326ba042cd7c300da496c5ab031aafcd0ff1548f44fbc68b54b3
194 Risk Score

Malware Insights

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

This PDF file is classified as malicious due to its use of a link farm and a redirector URL, identified by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The embedded URL, 'https://ttraff.ru/pify?keyword=caballo+de+troya+libro+pdf+descargar', likely serves as a lure for users seeking free content, a common tactic in phishing campaigns. While no scripts were extracted, the overall structure and heuristics strongly suggest a malicious intent to redirect users to harmful content, likely as part of a phishing or malware distribution scheme.

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=caballo+de+troya+libro+pdf+descargar In PDF document text
    • http://files.blenkinsopleathers.com/uploads/1/3/1/8/131858044/c890a.pdfIn PDF document text
    • http://files.magicsdreamescapes.com/uploads/1/3/0/7/130739802/9057010.pdfIn PDF document text
    • http://files.alexoconnor-onlineportfolio.com/uploads/1/3/1/4/131438348/aa734.pdfIn PDF document text
    • http://files.mpbnews.org/uploads/1/3/2/6/132681201/6221910.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/1/0439/8897/5774/files/mupevixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/9095006264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/magovapali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/miwibewitusonezid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4247/1064/files/46723616635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9387/6118/files/21895064929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5965/files/zojid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6146/1670/files/zibenepobavujaneno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1650/2939/files/86587313105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1796/0600/files/selal.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8410 5272 bytes
SHA-256: 64e848827519cc8f18eb3c11a52996a995d30a40b6e62c50f2638c7afe361dc8
font_01_sfnt_off00009618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9618 11540 bytes
SHA-256: a1571b86996019fc246d4c7646a917a9e2ad97c35cc4a229a74e8dcfe9e0ead6

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