Malicious PDF — malware analysis report

Static analysis result for SHA-256 a90feeceec87e40a…

MALICIOUS

PDF

35.8 KB Created: 2020-08-22 14:57:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 59b3877afc56cf8147891700f396b796 SHA-1: 2e59b5346c40bd616e9de698318fc82ebef86570 SHA-256: a90feeceec87e40a28fa14dde5b2064167a3068528c62e7d15481907e0f53e8f
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, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at `ttraff.com`. This suggests the document is part of a link farm or phishing campaign designed to redirect users to malicious content, potentially for malware distribution or credential harvesting. The presence of the `airplay apk ios` keyword in the malicious URL indicates a lure related to mobile applications.

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=airplay+apk+ios In PDF document text
    • http://toxipo.legacycaengineering.com/uploads/1/3/0/9/130969690/f2a1bd.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/1/0432/1440/5793/files/10193752814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/number_line_1_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8059/7152/files/22007040429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/vawodimefiwuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9141/8518/files/print_webpage_to_chrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3732/5472/files/59963958930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5332/5219/files/psychology_6th_edition_hockenbury.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7610/5893/files/android_admob_banner_in_recyclerview.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 5

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_off00004faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FAF 4968 bytes
SHA-256: 3bbff16688d4ae32b9b4ef220a575e36ac6dc119821e72d9d878ac366a7fdf56
font_01_sfnt_off000060a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A7 10080 bytes
SHA-256: 1abc79b787930bd680ebe5303f4f3da95449618d0cd8b9796ea7eb361c6ebbd4

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