Malicious PDF — malware analysis report

Static analysis result for SHA-256 880ff943d4ad1ba1…

MALICIOUS

PDF

67.3 KB Created: 2020-08-15 03:56:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 850438723b44f262994c8ac5491e0a6d SHA-1: ed4d2f690fae7428f92753f2ad01caed2f2cf8a7 SHA-256: 880ff943d4ad1ba18f821e3d50719b3dc665cd8211de60058d68c5f09e431788
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, with a critical finding for a PDF redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary purpose is to redirect users to potentially malicious content or phishing sites.

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=compress%2528+bitmap.+compressformat.+jpeg+100+baos%2529 In PDF document text
    • http://files.yogitreewellbeing.com/uploads/1/3/2/8/132816042/voxiwebujanogomowafu.pdfIn PDF document text
    • http://gakix.rachellacey.com/uploads/1/3/1/4/131407535/zalul.pdfIn PDF document text
    • http://redazefi.imatrictech.com/uploads/1/3/1/4/131438177/bumujiwigukufupi.pdfIn PDF document text
    • http://files.southernschoolphotography.com/uploads/1/3/1/3/131379213/kixorogamoturuzaduxi.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/1/0437/7339/5106/files/honda_radio_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7027/3174/files/nakogev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6272/6551/files/movikijezupetegubiresazul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wozofedotomutigetipire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4293/6731/files/14054430056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/zatuludonixuderoboges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/49314085357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/rapurekapirifodet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.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
🗂 Part of campaign: kinderoopreschool.com 3 samples

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8FC 5604 bytes
SHA-256: f9cad54fa55cbb8328494936ea4824e71e9510ce730df37c2c040e627febf7ae
font_01_sfnt_off0000bc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC2C 16660 bytes
SHA-256: 0b06f725d63ac51b04cd0d4dc0231ee52236f5fb64186109fdc1cec9189858d6
font_02_sfnt_off0000efb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB4 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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