Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6fb50d26ed6a045…

MALICIOUS

PDF

108.5 KB Created: 2020-08-18 17:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c6de7ad432d4e118d76ec316a0d6290 SHA-1: 053842a0cccd96826e5fbf9674d7f5134b70884a SHA-256: d6fb50d26ed6a0455ffe4613e58aa92909cd7361959522526d4cdf6368f60a62
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, with a critical heuristic identifying a link to a known malicious redirector at `ttraff.com`. The document body, though heavily obfuscated, contains text related to 'html5 templates free with css3' and the malicious URL, suggesting a lure. The presence of a link farm heuristic further indicates malicious intent to drive traffic to external sites. The ML classifier also strongly flagged this PDF as malicious.

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=html5+templates+free++with+css3 In PDF document text
    • http://zubodu.solihullurc.org.uk/uploads/1/3/2/7/132740880/6649271.pdfIn PDF document text
    • http://kunibok.dixonrams.com/uploads/1/3/0/7/130740051/zefumowolatupu.pdfIn PDF document text
    • http://rukedon.psubaltimore.org/uploads/1/3/1/4/131406709/wovawoj.pdfIn PDF document text
    • http://kavuzi.camrapenn.org/uploads/1/3/1/0/131070450/xotivudufip_zeremat.pdfIn PDF document text
    • http://files.bombexnovelties.com/uploads/1/3/2/7/132740337/b7a286225d93f25.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/1/0432/7600/9622/files/menesaxuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/vujewikugunumofuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1349/7251/files/42659931653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7867/1783/files/igcse_biology_short_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2474/3591/files/kugizitovasipuwanun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3712/1951/files/64029899745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/13861553934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6081/2189/files/30260211833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4963/8298/files/54180079104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1838/6588/files/xavunise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/44072855322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4248/5910/files/kendo_mvc_grid_client_template_javascript.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 6

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_off00016e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E10 5596 bytes
SHA-256: f0d6d6aa815540c201089cea6680c7620b50ecee84efc93a7f0944dec8de2f81
font_01_sfnt_off00018104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18104 10260 bytes
SHA-256: 97761f310fff76fdbd1fd212250723e9fe2acc138c72d9ff55253b0448acd09b

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