Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ff76bf1a573b36…

MALICIOUS

PDF

59.1 KB Created: 2020-08-08 18:20:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e2e74b48b9863e57c1086ab627f55efd SHA-1: 0c872c02e46647dea3eb271eb00618d946df21f1 SHA-256: 02ff76bf1a573b36dbf1d13b33eeb3e23714e0b76bfd607f28c2bd1bf66ab532
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create an SEO link farm, directing users to a redirector URL. This redirector, 'https://ttraff.com/pify?keyword=applied+mathematics+1+rd+sharma+pdf', then forwards to other PDF files, likely as part of a phishing or malware distribution scheme. The ML classifier strongly indicated maliciousness, and the presence of multiple malicious redirector links supports this assessment.

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.com/pify?keyword=applied+mathematics+1+rd+sharma+pdf In PDF document text
    • http://files.dempseyandwindle.com/uploads/1/3/0/7/130775970/5303147.pdfIn PDF document text
    • http://files.alisonweatherly.com/uploads/1/3/2/6/132682640/6526889.pdfIn PDF document text
    • http://files.sallyshaw.com.au/uploads/1/3/1/4/131407086/700952.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/bogopamupadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5040/0928/files/gipilipewuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2199/7979/files/pogufijaliwuvuxeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9912/7957/files/88817279788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0557/4309/files/vatinasexosewuzedifuparu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3037/1738/files/fizasivaluveziluje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/php_sort_array_by_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8729/6680/files/wapulanugirikux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3155/files/drosophila_mutations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9665/4499/files/kaniletilajoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6871/8242/files/digimon_world_dusk_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7379/8298/files/dufagiriledimivikotusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4303/5048/files/princess_mononoke_soundtrack.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D10 5008 bytes
SHA-256: 98ea1f5e9a3cac05f6bd03caf3324c3c7c8d5015da931ce4ded47b3757d3116b
font_01_sfnt_off0000ae11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE11 10248 bytes
SHA-256: d3808ae15e4916a7ff176625c438c47351415c37e4f3ba8d2c8f56a46c0a98fd
font_02_sfnt_off0000d0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F0 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34