Malicious PDF — malware analysis report

Static analysis result for SHA-256 0421b507959fb17b…

MALICIOUS

PDF

39.6 KB Created: 2020-08-22 20:58:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ee7071c45b7d751d2443115e4d265da SHA-1: 21f09e2f9f3d0011a683afe34a458dfc3534decb SHA-256: 0421b507959fb17b62cfc6d1b1ee278ec5b0939fd8137e33940b767cbe672682
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a redirector to malicious infrastructure, disguised as a downloadable checklist. The ML classifier strongly indicates maliciousness. The embedded URLs, particularly the redirector 'https://ttraff.cc/pify?keyword=cleaning+checklist+template+editable', are the primary indicators of malicious intent, likely leading to a phishing or malware download site.

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/pify?keyword=cleaning+checklist+template+editable In PDF document text
    • http://files.k4amg.org/uploads/1/3/0/7/130775435/riwatugegada_kiviziluxisufet_jixavegamo_lubon.pdfIn PDF document text
    • http://files.razfoto.com/uploads/1/3/1/3/131380641/davumanupusu-dopidipi.pdfIn PDF document text
    • http://tijadep.850plants.com/uploads/1/3/0/7/130739344/gamiteduzalare-nodejezefago-rewuvej.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/1/0429/7929/5385/files/linda_goodman_s_love_signs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2700/4577/files/setuxedujezebanen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7529/5640/files/kitab_bajuri_jilid_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/9053/4561/files/42515851944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/gigorimuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/686547572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8020/2905/files/32193303709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8085/7253/files/wotlk_holy_paladin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/21903892897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2699/7663/files/114121015.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_off00005d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6D 5500 bytes
SHA-256: 79edca84ebe566e62d88224eb9be525c116b2f3def73d7c6b0a2411605560247
font_01_sfnt_off00006fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEE 9892 bytes
SHA-256: 9194bdff0df80cce679edf60b7b936e9807781556c3506024c87c36147c05630

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