Malicious PDF — malware analysis report

Static analysis result for SHA-256 196f26d903d9c095…

MALICIOUS

PDF

43.7 KB Created: 2020-08-03 22:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 557688d5b724b1ff99ec981f333ec2a0 SHA-1: c4ee03dbb3f428f01f148ceec42ecf6507935015 SHA-256: 196f26d903d9c09511f0df9fb0e2b9a7ef4f3d9defe104ca5cef0c70a420b622
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=ejercicios+cardio+en+casa+pdf', which is also flagged by heuristics as a malicious redirector and part of an SEO link farm. This suggests the document is designed to trick users into visiting malicious websites under the guise of providing downloadable content.

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=ejercicios+cardio+en+casa+pdf In PDF document text
    • http://files.juneauobgyn.com/uploads/1/3/1/0/131070712/4322281.pdfIn PDF document text
    • http://files.oakridgefootballbooster.com/uploads/1/3/1/8/131856134/kowiwel-sixiti-ximekamugoresev.pdfIn PDF document text
    • http://files.khemkhon.com/uploads/1/3/1/0/131070618/junogilaril.pdfIn PDF document text
    • http://files.kimberlyandersonritchie.com/uploads/1/3/1/1/131164112/fasiribinipalopam.pdfIn PDF document text
    • http://files.arizonadpsrp.org/uploads/1/3/1/4/131453370/ximonotazim-pabarokukux.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/1/0433/1605/2123/files/tazijotejun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/6070982366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7941/6473/files/imgur_nsfw_clickable_you_re_welcome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4174/3263/files/todulesifopok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2687/3509/files/dsp_addressing_modes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5652/9557/files/kazidokugutobimovasepoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/anatomy_for_sculptors_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/andres_segovia_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8649/5396/files/mareluxifenoliramekemoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0587/8173/files/fundamentos_de_administrao_pblica_brasileira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6693/2902/files/75421124615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1478/1085/files/69114551064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9984/6824/files/7042228581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5783/1326/files/xegosotivibisabegibolu.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_off00006b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B46 5152 bytes
SHA-256: f06bb24b3321bffe799275928f698cbda9b14de8cfb40884039bb155d846367a
font_01_sfnt_off00007ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE5 11424 bytes
SHA-256: 22ded94f91e11b20463728a50e2b8c5ceb82004f45d903521f043db2e95895bd