Malicious PDF — malware analysis report

Static analysis result for SHA-256 510250699550d47e…

MALICIOUS

PDF

45.8 KB Created: 2020-08-19 02:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 981ac7353c440b0be5db65c2658b7114 SHA-1: 591d9f1ddccbd966d54e62678d4f58b2ee509472 SHA-256: 510250699550d47e0603bacb0b1dac7ec9fc0fe611dc40f7c0896a14138cfd2b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, many of which point to a redirector service (ttraff.ru). This indicates a link farm strategy, likely intended to obscure the final malicious destination. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector. The document body contains garbled text but also includes the suspicious URL and a reference to 'wkhtmltopdf', suggesting it was generated programmatically.

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=sixth+sense+movie+songs+free In PDF document text
    • http://mufod.vetbehavioroptions.com/uploads/1/3/2/7/132740978/bc6a8bc.pdfIn PDF document text
    • http://files.suntreehealingarts.com/uploads/1/3/2/7/132740270/zipawe.pdfIn PDF document text
    • http://files.breathmark.org/uploads/1/3/1/3/131383380/getowalule_bekenuba_gotipizimimej.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/1/0433/4115/2406/files/bhojpuri_dj_songs_new.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5035/3318/files/lotorotimelen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/bleach_official_character_book_2_masked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9065/4870/files/hampton_bay_ceiling_fan_manual_uc7083t.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1430/6466/files/cinacalcet_davis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7281/3211/files/rajomewuweteduzujudubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/posujekuwimenememozajewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1120/1435/files/47593324445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6310/9790/files/wafokokujilakofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5057/2695/files/maharashtra_state_board_11th_biology_textbook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2289/0646/files/avery_label_software_free.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 6

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_off000068cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68CD 5172 bytes
SHA-256: b73b0cf24b5b76adabab2a651424d315391d99baac482d5e484db0efd01bbf0b
font_01_sfnt_off00007a44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A44 15736 bytes
SHA-256: fd9880089bf4ff3431d31507e3faace8c201894a61595deaafca2855389c5062

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