Malicious PDF — malware analysis report

Static analysis result for SHA-256 721314c298321e24…

MALICIOUS

PDF

67.7 KB Created: 2020-08-10 17:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e191e5d971d5fb8d433ae24d3ba21bd SHA-1: 6008195125a86c055f911467c9de56ab8848f76b SHA-256: 721314c298321e24a4af1f0c8e0d500f321cb4a8ba22a4dbccd2bcb6b6aeb813
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, specifically 'https://ttraff.ru/pify?keyword=pl+sql+experienced+interview+questions+and+answers+pdf', which is flagged as malicious. This indicates a phishing or scam attempt, likely using the document as a lure for users to click the malicious link. The ML classifier also strongly indicated maliciousness.

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=pl+sql+experienced+interview+questions+and+answers+pdf In PDF document text
    • http://files.ashequilters.org/uploads/1/3/0/7/130738889/bidub_rawadagokoje_magum_dorawedunilasuf.pdfIn PDF document text
    • http://files.cuyaramidwifery.com/uploads/1/3/0/7/130776298/legejumumopoxoto.pdfIn PDF document text
    • http://files.middleclassmusings.com/uploads/1/3/0/7/130775310/kimigus.pdfIn PDF document text
    • http://gavadu.kirstenjoan.com/uploads/1/3/1/4/131453540/5360810.pdfIn PDF document text
    • http://files.hairstylizzt.com/uploads/1/3/1/3/131381722/61e33ea8.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/1/0431/0627/1394/files/le_bourgeois_gentilhomme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/tamil_e_newspaper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/bedenibepupimavaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/janita_mae_killam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2891/4087/files/sokofipebexuvipotetumeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/24116462055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6302/3518/files/worepuzawizodawuziba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8298/7173/files/coffee_break_french_lesson_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3797/4950/files/fezubupisalowuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/120_kilos_in_pounds.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_off0000c199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC199 5496 bytes
SHA-256: 65721ed12d07fb0c5e77876ca67a426cee88d879cfec024d8842d969727687bc
font_01_sfnt_off0000d470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD470 14076 bytes
SHA-256: 3bb1980b56d070356a52b17a70bda844687af91d8393e46424d06f1c9d2520e7

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