Malicious PDF — malware analysis report

Static analysis result for SHA-256 7491e41e11f62b10…

MALICIOUS

PDF

37.4 KB Created: 2020-08-09 07:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 090fbe62bb8696f0c227df184e87ea51 SHA-1: b66f41565b482150c3fd1ea3a64dec17613d1670 SHA-256: 7491e41e11f62b102a6fcd008644cac5e847724e21a60a151b745e86d555d896
194 Risk Score

Malware Insights

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

This PDF document acts as a lure, presenting itself as a download for "The old man and the sea" to entice users. It contains numerous links to external PDFs, many of which are hosted on Shopify and appear to be part of an SEO link farm designed to drive traffic to a redirector. The primary redirector URL is https://ttraff.com/pify?keyword=the+old+man+and+the+sea+pdf+file+download, which is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or traffic-generation scheme.

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=the+old+man+and+the+sea+pdf+file+download In PDF document text
    • http://files.laurieburtonart.com/uploads/1/3/0/7/130775350/pibosasagajen-xesinezipaz.pdfIn PDF document text
    • http://files.conservingcentralindia.org/uploads/1/3/2/6/132695492/pimisimumefex_notaw_sobajelunovoxa_kirovipenujapo.pdfIn PDF document text
    • http://files.littleladyboutique.shop/uploads/1/3/2/6/132682235/a73de171e855.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/1/0435/2793/0011/files/xitavalazavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/jolaboturevew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/80546188153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/kudesewomaruru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3696/5029/files/mary_kay_compensation_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/intel_centrino_advanced-_n_6205_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4396/1494/files/37516834616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4798/4026/files/20568306650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9162/files/nacionalidades_en_aleman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/27106357753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3237/9545/files/15103113711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1765/8780/files/oxford_dictionary_of_accounting_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5544/7202/files/exercicios_sobre_balanceamento_de_equaes.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5250 5224 bytes
SHA-256: 153d8e962b8ec4f8dd345d1faecd18ef7b93f837815d85b8acfe83b11b3cc116
font_01_sfnt_off00006403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6403 11376 bytes
SHA-256: ddd1eb3e47d8844ec77d55a11f48480be14a0eefe6738a95cc5eee9b6332b14c