Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b7a6125baf03cc9…

MALICIOUS

PDF

47.7 KB Created: 2020-08-10 02:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5476f7a8d96d53fe45df63bd81910e26 SHA-1: c9f86b7f2fbad9b0d78a2f470909e438e7400d03 SHA-256: 4b7a6125baf03cc9e8c14e5944621bd0c8b89f53e7df071726201e2216b3db70
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at https://ttraff.ru/pify. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body was heavily corrupted, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=circle+of+fifths+pdf+guitar In PDF document text
    • http://files.time2shinehypnotherapy.com/uploads/1/3/1/0/131070230/gatinulu.pdfIn PDF document text
    • http://files.darkestsidesilver.com/uploads/1/3/1/4/131437123/94b384c2e9edca4.pdfIn PDF document text
    • http://files.keelancole.com/uploads/1/3/1/6/131606291/3092989.pdfIn PDF document text
    • http://gugex.tomasoltavern.com/uploads/1/3/0/7/130775413/nawedoxunizaxali.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/1/0434/7982/6589/files/honey_bee_castes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8178/4726/files/electrical_engineering_mcq_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7490/3452/files/xuzefomokirezogujufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0490/3073/files/fofive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6742/4412/files/76534542996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/85906559585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2539/8946/files/kenmore_ultra_wash_dishwasher_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7813/9556/files/43256963655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/zufulapar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5943/7975/files/automated_biochemistry_analyzer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7223/3380/files/gopejexifisoteka.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_off00005f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F73 5320 bytes
SHA-256: 920ca07b8280d1250b92591eaa0be24e11fc3143a4236b77ca43e969e2a13662
font_01_sfnt_off00007184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7184 13716 bytes
SHA-256: c9f142b0b569e3be25a73db076b21973cab0f2929c6967b5aced244d47640163
font_02_sfnt_off00009cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF7 16120 bytes
SHA-256: 15a68420f1c377824b8c1fd571ac7c30556db1b4bc05006bf44ec3f6c6c83208