Malicious PDF — malware analysis report

Static analysis result for SHA-256 5172777245aa3b59…

MALICIOUS

PDF

38.6 KB Created: 2020-08-22 19:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da0c28cb434b3e663b2f3027169d083e SHA-1: d640dd09e5e45918968ba719607ea10bc6545126 SHA-256: 5172777245aa3b597fb7efd213eb2b3fbf2f3d4a14d4ca716b4b207cd3e5fd9b
202 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body also contains the same redirector URL and a phrase suggesting a download lure. This indicates a likely attempt to distribute malware, possibly an application, via a link farm and redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=hungry+shark+apk+indir In PDF document text
    • http://files.toolbox2teach.com/uploads/1/3/0/7/130739264/dekodokuweg.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/1/0433/0687/7080/files/fedixudarat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6390/1348/files/rupaputuniriwukofuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2836/4968/files/66040827152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8582/4154/files/pexonuvuzoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/64535741766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/bench_test_starter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2120/4631/files/nimunedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9879/0301/files/angielski_wiczenia_sownictwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2658/0375/files/geethanjali_new_movie_naa_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1128/4885/files/76861317564.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 1

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_off00005097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5097 5316 bytes
SHA-256: 4b476ed025ad4431e340d7b8cb5c7a8d295e4ab3da35b29129cdaa9d88a6c887
font_01_sfnt_off000062a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A5 13960 bytes
SHA-256: aa92d86e2f56cf8d28420feb690d05dde5f1b2a0e1b7684dbf5cb5f84f1dd995

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