Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86405c96e3bf4f4…

MALICIOUS

PDF

38.6 KB Created: 2020-08-08 10:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 06dc8e44a872a38fbf7f2f98e5cdfee4 SHA-1: e048973fde0c3147d8796d1afeff694185b8c874 SHA-256: e86405c96e3bf4f40979bb694ab24ef52e9cec4957777e5ed844c629d47a1eef
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 `https://ttraff.com/pify?keyword=clinical+sports+nutrition+pdf`. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on `cdn.shopify.com` and other domains. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the target URL, suggesting the primary intent is to redirect the user 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=clinical+sports+nutrition+pdf In PDF document text
    • http://files.uclachatpd.org/uploads/1/3/2/3/132303205/8765450.pdfIn PDF document text
    • http://files.tcpmagic.com/uploads/1/3/0/7/130776779/5723175.pdfIn PDF document text
    • http://joxofid.stevepeckfabrication.com/uploads/1/3/1/6/131637016/wunazometep-loxivirinufa-dafawovurif-wigeteruweko.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/1/0430/3932/6365/files/alagappan_medicine_book_pdf_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/dupupemufuxoboriwijuveba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/wusesifezeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4373/4172/files/aisc_14th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/75201858296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6049/4490/files/69075240332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9229/6358/files/zetamavojipuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1808/2709/files/worship_keyboard_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9256/1310/files/linfadenite_mesenterica_pediatria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42820491308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0952/2339/files/allah_names_99.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8948/4190/files/zuludokavovaw.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_off00004a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A59 4936 bytes
SHA-256: 02706f1fffbff93bae7b4310f579966a6124bec1f7377f1f3770180f667d8eaa
font_01_sfnt_off00005b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1A 10264 bytes
SHA-256: 863cfaac9e21606fdb3eae243282e23eaa8e23bf0368cac7490727c66555d293
font_02_sfnt_off00007dcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCD 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34