Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceadd459736b4db4…

MALICIOUS

PDF

41.2 KB Created: 2020-08-19 17:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8155fd0db016fe8871836a939f8ad37 SHA-1: fff7a35981ea75b1c3c11c4081e2f3d1b870e3c7 SHA-256: ceadd459736b4db4cde83c6958ee0fa1d668ad780fffe97c0861380f791d2598
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=esl+guided+reading+books`. This link is presented in the document body under the guise of educational materials. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector is likely social engineering via a deceptive link.

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=esl+guided+reading+books In PDF document text
    • http://files.raisingbasketballplayers.com/uploads/1/3/0/8/130813855/9331172.pdfIn PDF document text
    • http://files.visionssupplyanddesign.com/uploads/1/3/1/0/131071258/kadiki-wofelesagetab.pdfIn PDF document text
    • http://nitej.ulrichmotorsco.com/uploads/1/3/0/8/130873826/4599024.pdfIn PDF document text
    • http://files.animalwonders.org/uploads/1/3/2/6/132681294/xetoloxedawiled-lasiniludizo-levir.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/1/0429/8833/9354/files/bipekozedujebazofajisajos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5743/7080/files/accordance_shelly_crane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6670/3516/files/88664092807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3798/0834/files/6283443081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/75005999135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2653/5832/files/anarchist_library.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0498/4483/files/zodadavewipisebomemejav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1460/files/49558542293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5785/4102/files/cossacks_3_strategy_guide.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 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000649d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649D 5156 bytes
SHA-256: 4a803da2a01040311894d80ba873463cf57730131dde348cf45c8460cf08558d
font_01_sfnt_off0000762c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762C 10044 bytes
SHA-256: 6034dc36453819b1c0953a7cfec00271cdf7cbeacc96e9ecdc84f01e18cd26ac

Open this report in the interactive analyzer, or submit your own file for analysis.