Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c4c14b8601f3684…

MALICIOUS

PDF

114.8 KB Created: 2020-08-09 09:28:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2acd0005b04491c47ae164849411225b SHA-1: 429d537fca6b7ee084da81929ad99500e40ddb29 SHA-256: 6c4c14b8601f3684f7a91e5c3b76385b2a66b2aae8c2ae85b263a96e62323e95
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com), indicating a link farm designed to distribute malicious content. The document body, though heavily obfuscated, contains a reference to the same redirector URL. The presence of a large number of external PDF links suggests an attempt to game search engine results for malicious distribution.

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=contaminacion+del+aire+pdf+tesis In PDF document text
    • http://files.dougwedge.com/uploads/1/3/1/4/131437593/wudew-kalurebof-damafuwawelovo.pdfIn PDF document text
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdfIn PDF document text
    • http://nipivod.erinmicklow.com/uploads/1/3/0/8/130814328/2162244.pdfIn PDF document text
    • http://files.ustars.org/uploads/1/3/2/8/132814196/fibal.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/1/0435/6512/1699/files/men_in_black_megavideo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9640/8218/files/lufivatalutelata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/30218299477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8092/2789/files/husqvarna_chain_saw_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8225/2442/files/biraluneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8402/7806/files/rozokazupugoviliwutipivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5952/8355/files/roper_washing_machine_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/how_to_use_neat_scanner_without_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/43831372653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/multisensory_teaching_of_basic_language_skills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/fexiwivalawaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/kukofopowefav.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_off00018099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18099 5208 bytes
SHA-256: 9e9e74dff56c8882fe6862a785e02937ca4bb866f658d49435d2954b5b5108ea
font_01_sfnt_off00019230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19230 14556 bytes
SHA-256: 032f8b941ce433a4eaf4ed9d97627376524a78cd31672f8427079154be6cf70d

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