Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad4a4701c7b25915…

MALICIOUS

PDF

43.1 KB Created: 2020-08-18 22:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: acc910793ec1f9e79418b99a62b31345 SHA-1: 0881d7861c1b66bb1f13a26fddc61fcb67b7076c SHA-256: ad4a4701c7b25915816446839638f46649f3da9352b075f820cc0984ced1324e
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=free+logos+bible+software++for+pc', which is flagged as malicious. This suggests the document is designed to trick users into clicking the link under the guise of downloading free software, leading them to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=free+logos+bible+software++for+pc In PDF document text
    • http://noxiri.theglaws.com/uploads/1/3/2/6/132695818/vuragep.pdfIn PDF document text
    • http://files.flatspokecycles.com/uploads/1/3/1/4/131408529/6549756.pdfIn PDF document text
    • http://files.ancestorscouture.com/uploads/1/3/0/7/130775180/nuredozoti.pdfIn PDF document text
    • http://wofifuted.education-projects.com/uploads/1/3/1/8/131856158/6217925.pdfIn PDF document text
    • http://jugib.pershoretownplan.co.uk/uploads/1/3/0/7/130776485/74f750d85af.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/1/0427/4136/6951/files/the_veil_rpg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/c_custom_iterator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/juvagaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wawufomujemozinabewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/29839529544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5018/8443/files/87702923005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/cyberbullying_on_social_media.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9914/3838/files/97646814602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/2423/9003/files/bahawalpur_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/xutuvubaxiwuwujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/69563185685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/11631236273.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_off00005bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB4 5052 bytes
SHA-256: 06ccbfa385b6b77bd8bd81bd944ee00840ce1c0fffcf97014372af3de4c2b877
font_01_sfnt_off00006d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0F 10488 bytes
SHA-256: 5d0f0186cfb61e5a33fbe4f1e3e06aa99e03cac1fe0d523d682272c47875ce33
font_02_sfnt_off000090f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378