Malicious PDF — malware analysis report

Static analysis result for SHA-256 394556236dde7b96…

MALICIOUS

PDF

76.0 KB Created: 2020-08-10 16:31:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c169af5424ba61c8688711260916a903 SHA-1: 2904dca23840a4d689b51825a99de0d2edb9e186 SHA-256: 394556236dde7b96e86f04d5f06b17e72de2ac4b9b8e159c3262ac5e4248a507
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the PDF's primary purpose is to redirect users to malicious infrastructure.

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=extended+mean+value+theorem+pdf In PDF document text
    • http://files.rottencollective.com/uploads/1/3/1/4/131406843/zafozere.pdfIn PDF document text
    • http://files.iowaartists.us/uploads/1/3/1/8/131856347/tubavurapuxulub.pdfIn PDF document text
    • http://kigivu.nunoreasters.com/uploads/1/3/1/6/131637254/nametaseli.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/1/0439/2887/9272/files/fajajozifemulobudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4660/8794/files/72060838186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/fufakimekefuwijusudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6948/8798/files/ffxiv_act_overlay_not_showing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/kewonabafejakepuxesur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/47501595657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4083/3690/files/rakosisufedukesezodad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/tedetiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0191/2224/files/zugovulozotuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2658/7549/files/sibekolepizegonokufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/jumalivasigejaluv.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC8C 3080 bytes
SHA-256: 3b6c3edccbbdf68622c80e44ac099bd4bffa00507f4f1bc839f0bdbf087aa810
font_01_sfnt_off0000c796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC796 5188 bytes
SHA-256: 509287b8673a866b5a78f363786413ae7d1b9b0e653a8bdf94f227e0cd5b5fb2
font_02_sfnt_off0000d912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD912 15740 bytes
SHA-256: e03801e47c627a83f93faa7b7f22bcee35d2b6df560cb714a30a162f4ab16b45
font_03_sfnt_off00010a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A30 16828 bytes
SHA-256: feb86654da44313fbca0b96430969f1ad862a1afc7a3d745d5aab2c8a72f0893