Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff72c61f754711d1…

MALICIOUS

PDF

40.7 KB Created: 2020-08-15 06:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dabe6bd10524a9d1992834f618d0a7e SHA-1: 56dd024c455b8bdf549af131cdd8f91742291454 SHA-256: ff72c61f754711d19e4b2b9e456fd308a0e38554c3662b68e6727e5c8538cc2a
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a tactic to manipulate search engine results or to distribute malicious content through a link farm. The presence of the malicious redirector URL indicates an intent to lead the user to harmful content.

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+zero+and+first+conditional+worksheet In PDF document text
    • http://gadij.henriette-hackenberg.com/uploads/1/3/0/8/130874330/mebexavuzekokudeben.pdfIn PDF document text
    • http://files.tregoningandco.com/uploads/1/3/1/0/131069934/b537f43110dfdf.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/1/0437/1503/5288/files/gta_5_ps4_price_gamestop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/48127068026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/bulk_density_of_concrete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1587/2423/files/85918927487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/nober.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0413/files/15206095318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5996/1239/files/japanese_calendar_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3319/7718/files/wetabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8402/files/bangladesh_population_census_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3339/5353/files/25483152634.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_off00006046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6046 5272 bytes
SHA-256: 56b47b0426801a40545e3bfa645aa08eaa378e9155b0333b2a096c6a3b19539d
font_01_sfnt_off00007247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7247 10548 bytes
SHA-256: 85618da896717a4499982c0d39f08630c6aec0cae08a717a6ffdad4cead90106

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