Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8d5eced413be1e1…

MALICIOUS

PDF

59.4 KB Created: 2020-08-16 19:30:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3520f3b57e141444499e7f0ffd8001a SHA-1: 28838fc7d90187a98c1224509f91bb0aac63b064 SHA-256: f8d5eced413be1e1b306eeaaa4b39e16fe0ff490230b592fa8ef712393a66b21
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to Shopify-hosted PDF files, indicating a link farm likely used for SEO manipulation or to distribute further malicious content. One of the embedded links, 'https://ttraff.cc/pify?keyword=wpf+treeview+hierarchicaldatatemplate+selected+item+mvvm', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=wpf+treeview+hierarchicaldatatemplate+selected+item+mvvm In PDF document text
    • http://files.uhighmusic.com/uploads/1/3/1/3/131381095/1466763.pdfIn PDF document text
    • http://files.ankatriencasselman.com/uploads/1/3/1/4/131437889/8f3519.pdfIn PDF document text
    • http://files.dorotasashabolle.com/uploads/1/3/2/3/132303209/2303198.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/1/0435/2750/4024/files/40196299835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/vadefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/totesisanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6117/8521/files/83417387647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/44106094578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/medical_tourism_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2347/4583/files/79138743911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4256/9383/files/fugukanap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5106/4228/files/ateneo_de_davao_school_uniform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/zejiwaxalobepa.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000088ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AD 3376 bytes
SHA-256: 047aad67b1956521b6e9e91478622b409d268002e8ca03a4d685ef6cf0e35c50
font_01_sfnt_off000094c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C4 5132 bytes
SHA-256: 180e3f1fe4a293b696477ba3561b1e175454a2153c32e1731a91ffffe89394c2
font_02_sfnt_off0000a64f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA64F 13528 bytes
SHA-256: 29d7e2c8f5baf3f0e8ded38c68cd5c98abf157ae86a618d67ce5281479c029d2
font_03_sfnt_off0000d1d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D9 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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