Malicious PDF — malware analysis report

Static analysis result for SHA-256 5680addaeec0322e…

MALICIOUS

PDF

43.6 KB Created: 2020-08-14 14:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b6e35adc4abb37895c2403e61101f0b SHA-1: 7ca4c48585bde33f14ca67cd0f3a30961619658e SHA-256: 5680addaeec0322eb154e62526ca694e369357a0c51349158d8c08df138c8f29
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The document body is heavily obfuscated, but the presence of numerous external PDF links suggests a link farm or a method to distribute further malicious content. The primary malicious link identified is https://ttraff.com/pify?keyword=koreader+kobo+pdf.

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=koreader+kobo+pdf In PDF document text
    • http://files.ten4enterprises.com/uploads/1/3/1/4/131408970/xomoriwadi_xaxememobum_dexep.pdfIn PDF document text
    • http://files.teamacorntriathlonclub.org/uploads/1/3/1/4/131438784/2356931.pdfIn PDF document text
    • http://jizur.fairfieldtaxpayer.com/uploads/1/3/1/3/131383483/bevimupasexilufogobo.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/1/0437/4511/6311/files/lutelamoleguk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3488/5796/files/42139924134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7291/3557/files/html_format_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8319/2738/files/90610705586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/ben_10_cartoon_network_free_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0958/4802/files/latex_cv_template_picture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/42653764359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/vofitulasuvisoviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/laxojurikinikiwopelagig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19490865332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/71777953171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/veroset.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_off00006d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6F 4996 bytes
SHA-256: 16f598bddfa85ea84d2e34201a799703f9d3da2dc2cc00772ef898e88016722e
font_01_sfnt_off00007e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7E 10376 bytes
SHA-256: 9b2a590918a7d07ca911c4ce2f221ae4c445bdd455b62edfaf20119ee1eb37e0

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