Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c4f93c113c5ef6…

MALICIOUS

PDF

58.4 KB Created: 2020-08-11 03:49:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 384c72191f9d5c35b4252c58cfaa73df SHA-1: 49b3b68183f5da79382b5e64bf19235c50f5b2bd SHA-256: 06c4f93c113c5ef68d8e27d5a48eb84e85cd8c95867e09ed3ff3275abab2e16f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by a machine learning classifier and contains numerous links to external PDF files, functioning as a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=cable+selection+formulas+for+electrical+load+pdf', is known to redirect to malicious infrastructure, indicating a potential phishing or malware distribution attempt. The document body is heavily obfuscated and appears to be generated content, further supporting the malicious intent.

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.ru/pify?keyword=cable+selection+formulas+for+electrical+load+pdf In PDF document text
    • http://files.projectdancecompany.com/uploads/1/3/0/8/130814229/bd812.pdfIn PDF document text
    • http://files.whatissparta.com/uploads/1/3/0/8/130813736/50ede4ad32d2668.pdfIn PDF document text
    • http://supofemik.drbrightman.com/uploads/1/3/1/4/131454065/zibamebobarogefa.pdfIn PDF document text
    • http://files.quickstitchplus.com/uploads/1/3/1/8/131856279/najusezizoretuvuwo.pdfIn PDF document text
    • http://files.studioviemen.com/uploads/1/3/1/4/131453429/1997700.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/1/0434/5767/5431/files/dr._cindy_trimm_prayer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3051/7672/files/bufivijoxibafavele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1771/4334/files/domestic_animals_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5562/files/61566793718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/2221717303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/wopitowasoxelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1720/6949/files/50013875678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0658/3203/files/kozawexibupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/wifozopiwapomox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7299/2918/files/feloluriwodus.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00008230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8230 5344 bytes
SHA-256: dbc842c2a2d5b736a8dece38a84a1b1ed767dc43307f71decbd09dcbefe991a1
font_01_sfnt_off00009438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9438 15332 bytes
SHA-256: 98fb6c13deef282181cf14f25568917e4e297f7bc5a7b162a5b86e2f4cf7fd27
font_02_sfnt_off0000c48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC48F 16192 bytes
SHA-256: c00f55c8a23f8fc12478e3e4ea1bac713d25e4d1dd6e1e4bb5c667610ba6b2cf

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