Malicious PDF — malware analysis report

Static analysis result for SHA-256 58412caaaaabcce5…

MALICIOUS

PDF

42.7 KB Created: 2020-08-15 03:28:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb3d89f1eed6f42ca55957e984092613 SHA-1: db4c45835723962a30831de3bd1993679df6a4b3 SHA-256: 58412caaaaabcce549f3489c0d587d38201a6cb5dd90c79d7776d7f540c7ab21
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, constituting a link farm. One of these links redirects to a known malicious domain, ttraff.com, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary malicious activity appears to be the redirection to malicious infrastructure.

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=applying+economics+worksheet+factors+of+production In PDF document text
    • http://files.bigskycafe.net/uploads/1/3/0/7/130775795/9427104.pdfIn PDF document text
    • http://files.forestlanebotanicals.com/uploads/1/3/0/7/130775129/giwenuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1007/6322/files/ranavomobokososerikumomef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3699/7792/files/lg-_b470_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0301/7378/files/27414910555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9371/1265/files/samodipuzexirizukixoxun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5089/9368/files/gowitisilanamugigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7848/3097/files/newegaderepab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8967/3888/files/basiliscus_basiliscus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A03 5696 bytes
SHA-256: 1ad590ef77f2524cf1dcec628908a60ff046523182d2ca9dca597f7d685dbb6c
font_01_sfnt_off00006d41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D41 10132 bytes
SHA-256: 789746c3ca8450ef01cb42c7005f261f2d0942ff745102be3f3f34d33a469214
font_02_sfnt_off00008ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFA 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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