Malicious PDF — malware analysis report

Static analysis result for SHA-256 e591f5f7b2caa23f…

MALICIOUS

PDF

50.8 KB Created: 2020-08-12 20:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f750f8b7fc7eeabed8d837e058996162 SHA-1: 886a7af083ec6e50268c93846519129400c3799b SHA-256: e591f5f7b2caa23f6f49146d6b95cd23671e7b03c4d7c3aed1083444c1d58a6e
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a malicious redirector link disguised as a download for 'Lightroom keyboard shortcuts pdf'. This link points to ttraff.ru, which is known malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, likely for SEO manipulation to improve search engine ranking for malicious content. The presence of a 'download button' heuristic further supports the lure. No scripts were extracted, but the primary attack vector is the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=lightroom+keyboard+shortcuts+pdf In PDF document text
    • http://files.friendsofrenacer.com/uploads/1/3/0/7/130739227/b554e01ab.pdfIn PDF document text
    • http://files.mexpup.com/uploads/1/3/0/8/130815381/wugenafapon-denutepibijan.pdfIn PDF document text
    • http://files.beckyjonesart.com/uploads/1/3/2/6/132695915/menipupa_vexinilowawode.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/1/0428/7945/1289/files/media_nutrient_agar_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2641/5779/files/python_dictionary_with_multiple_values.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/26411772187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/bufebakatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/46294752310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/intertherm_water_heater.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74832969368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/60222038051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/hive_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/87899189988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/1983_honda_shadow.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_off00006eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EED 5784 bytes
SHA-256: 35d5db24f70e5980b360107ed9661f384de7feac3a51f2cbba7ff55df9614fff
font_01_sfnt_off0000828e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828E 10420 bytes
SHA-256: 6a84d3699e1320c08705c2c2e036f83a4b11d6ef7b1d5b50c853e9a0b2c29f34
font_02_sfnt_off0000a65d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA65D 16940 bytes
SHA-256: e2ffbbc5bf6c0928b9f03c3b463746bfb576a8938676bcf21b024e35877a1a65