Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1eb39671ee035d…

MALICIOUS

PDF

73.3 KB Created: 2020-08-03 23:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b86f01b3252fc35ac31aee8891ef3abf SHA-1: 74aeec6403e0256d125fd0589534318ee3cb1ec6 SHA-256: dd1eb39671ee035d6bba4527851482b1e1da49a7bfa18136eda31925464f9eec
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=feet%20of%20clay%20pdf'. Additionally, a PDF link farm heuristic indicates the presence of numerous external links, with 'https://cdn.shopify.com/s/files/1/0429/5639/0559/files/rixamapivazeb.pdf' being the first identified. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same URL as the malicious redirector.

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/wb?keyword=feet%20of%20clay%20pdf In PDF document text
    • http://files.midvalleyartsleague.org/uploads/1/3/1/3/131380297/konamed.pdfIn PDF document text
    • http://files.trackingclubofma.com/uploads/1/3/0/8/130874210/3971527.pdfIn PDF document text
    • http://files.polos.org/uploads/1/3/1/1/131164239/1110485.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/1/0429/5639/0559/files/rixamapivazeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6217/3602/files/89885273179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/39579121961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/xumadumevaxutazadoxegulob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5280/files/12680537726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7669/7760/files/best_free_cd_burning_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4916/4693/files/kozuxifidefokikokaxijof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/12815106185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0402/6280/files/lalevirarabawozukuxasomip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1421/8143/files/gozibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8248/0806/files/22090137864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/tarorerarinodaxemonepop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0711/files/dasodotiwuvizerag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1294/8121/files/7533538192.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_off0000e2fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FE 4932 bytes
SHA-256: b2e745d9887337ace551046b51577fcf270341d2f474773835e09799b6d26b16
font_01_sfnt_off0000f3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F2 10608 bytes
SHA-256: d39c769f31b603feff2c0e51b62809dbf3052e5403b8787eda6036add839a9ef

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