Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a5372c946182e4f…

MALICIOUS

PDF

41.7 KB Created: 2020-08-08 18:59:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7b92bb508cb4617953d39f52e47570d SHA-1: e616ef47003f2b6f052acb52aaf660d5547f44af SHA-256: 7a5372c946182e4fbcf33dfe1d2df3310fb9b2e7f395685158b0639fbff4d47d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure like 'ttraff.ru'. This suggests a link farm or SEO poisoning attack designed to funnel users to malicious sites. The document body, though heavily obfuscated, contains URLs that are likely part of this redirection scheme. The presence of numerous PDF links and a malicious redirector strongly indicates an attempt to lead the user to a harmful destination, likely for phishing or malware distribution.

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=calgary+downtown+map+pdf In PDF document text
    • http://files.getagripmarine.com/uploads/1/3/2/7/132740445/ritidax_sofisu_rinafotoxu.pdfIn PDF document text
    • http://files.retreatsinbeing.com/uploads/1/3/1/3/131384539/javepagexu-dojov-lenigexuluguwud-wuwutukanu.pdfIn PDF document text
    • http://files.gardenspotrentals.net/uploads/1/3/2/6/132681938/finefenusavat.pdfIn PDF document text
    • http://files.ligonierhighlandgames.org/uploads/1/3/2/8/132816036/ed36859012d.pdfIn PDF document text
    • http://files.pageflicker.com/uploads/1/3/0/7/130738970/dejilololuvino.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/1/0429/1212/0998/files/jobagazetepero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1172/5723/files/29576630870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8742/0835/files/best_pathology_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8531/5739/files/22927631931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/tusosibefijat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1057/1940/files/bank_po_syllabus_free_download_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5584/0422/files/44552723389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/fediripapiruv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/faa_far_91.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/61523531259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/18961814484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5521/0905/files/accounting_warren_reeve_duchac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0473/9232/files/basic_concepts_of_networking.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000632c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632C 5280 bytes
SHA-256: 1084cc9bcf15d7929adba5df3b4aa36db3014e7127519b18944927ece513c111
font_01_sfnt_off00007524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7524 10856 bytes
SHA-256: 2232c2729cf6ae91ec948f0eaa3eb9a15444a041fd2ef4095a663776ef56ab9b