Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f74be5d2091c728…

MALICIOUS

PDF

71.8 KB Created: 2020-08-06 21:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32af1dd54f675e44b07303b955c879f2 SHA-1: 6f862250c0dddad982bcb1529627cd70dabf1c12 SHA-256: 7f74be5d2091c728932286ab95ac6da27ac01ac1e4c9742ad275bbbcd12241f6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to SEO-optimized PDF files hosted on Shopify, forming a link farm. A critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=amidah+en+espa%25C3%25B1ol+pdf', suggesting a phishing or scam lure. The ML classifier also strongly indicated maliciousness.

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=amidah+en+espa%25C3%25B1ol+pdf In PDF document text
    • http://files.sthrouda.com/uploads/1/3/1/4/131408142/6522907.pdfIn PDF document text
    • http://files.lifepointeroanoke.com/uploads/1/3/0/7/130738666/kivorepiso_tumomemaku.pdfIn PDF document text
    • http://files.firstbaptistwhiteplains.org/uploads/1/3/1/6/131606569/zekosinut.pdfIn PDF document text
    • http://files.visceral-entertainment.com/uploads/1/3/1/6/131606127/lafizuf.pdfIn PDF document text
    • http://files.humboldtmutualinsurance.com/uploads/1/3/0/7/130739864/letowaron.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/1/0438/1723/8685/files/callable_vs_runnable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8217/7946/files/57083537465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8854/2872/files/pofijumam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/35310573785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/36543570336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6567/8755/files/bailey_scott_s_diagnostic_microbiology_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9088/6299/files/53277488466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8129/3221/files/89594754562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/bmw_s1000rr_2020_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/spider_man_comic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6265/6157/files/fibadunumefiluvuxon.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_off0000d334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD334 5384 bytes
SHA-256: c37fd3c95222cb237ab7494e2ba17d02935d24c9d846f1c246640843dc1ff373
font_01_sfnt_off0000e51f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51F 13536 bytes
SHA-256: 042bc6ed5cbd35e351fffedde65bf2e879950e5aebfbee25ce532c1dbd02fbf8

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