Malicious PDF — malware analysis report

Static analysis result for SHA-256 f45f4145a725d2ff…

MALICIOUS

PDF

56.4 KB Created: 2020-07-31 12:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cad1d62c95ecefff8fceed17c1f0ce1f SHA-1: 226e3870a61dcaadd2a232c6bb4d3d41733e83b6 SHA-256: f45f4145a725d2ffd4b1f24eda7d5976bd977978515e67c5e67082e4ab954204
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links redirects to a known malicious redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or redirection campaign.

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.ru/pify?keyword=technical+proposal+for+baseline+survey+pdf In PDF document text
    • http://files.coffeerosaguam.com/uploads/1/3/1/0/131070762/bc5b231c36.pdfIn PDF document text
    • http://files.reardenrealestate.com/uploads/1/3/1/3/131379894/riwimazidipix-dezavosuziw.pdfIn PDF document text
    • http://files.electorials.com/uploads/1/3/0/7/130738725/kipajezel_tofokekaxes_vegigevisex.pdfIn PDF document text
    • http://files.worldscreenculture.tv/uploads/1/3/1/3/131379740/jimuxaji.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/1/0431/6259/9583/files/zumikorofujaroteturutaxok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/wopalamedebatevofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/52160188649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/pusokumuvadapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3732/5462/files/74634355146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4731/3827/files/raxulebib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1691/2037/files/98159668318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5383/3637/files/66327279082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/33223762581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9907/8299/files/zadutopak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0780/9448/files/82215662765.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9513 5296 bytes
SHA-256: bc904d0b43046f98d505edd06919042d782ec2ab89e1e4ebd75e1be142f3d6a7
font_01_sfnt_off0000a6f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6F2 14748 bytes
SHA-256: f629fca57feae802d6e8fb3d555db7a5928490ea7d9ce15e541749fce7c94279

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