Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a868b9a50a26004…

MALICIOUS

PDF

45.4 KB Created: 2020-08-25 02:33:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83a6e8f37670a3353e1d60186225bb30 SHA-1: a5bbd0dc7d79ae66792c79dfcd7f365608c67d58 SHA-256: 2a868b9a50a26004b627dc8ad0c405ba9338dbc82e7364f24e5e63f302a2927a
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm designed for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same redirector URL and several other PDF links, reinforcing the link farm and redirection attack pattern. No scripts were extracted from this sample.

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=heartbeat+bts+piano+sheet+music In PDF document text
    • http://xugid.gsjacobsen.com/uploads/1/3/2/3/132302868/supezo-zozatam.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/1/0436/7345/2697/files/ruvewafizizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/probability_theory_and_mathematical_statistics_fisz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/wanululizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4414/2245/files/rilufotomedamaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/wilarijob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1097/2056/files/tivogonikolejatig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7252/0353/files/zagapigazunetofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/multivariate_analysis_statistics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9815/8744/files/all_airlines_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/webevabup.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4500 3052 bytes
SHA-256: 3fa9415b002eb0bdbfacdb4b915cba113f0425614f7e5624e4ec80e02746bfa0
font_01_sfnt_off00004fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FD7 5244 bytes
SHA-256: 3cb8f1c1379f36a1294c3aca439a440469790d55ac62a039df098fb5c7ed4ef4
font_02_sfnt_off0000616e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616E 15112 bytes
SHA-256: 879b019d02371f51eeca08a85d21a075616fe7a085c4328a378496c822c4014a
font_03_sfnt_off00009126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9126 16080 bytes
SHA-256: 705cd36d9c2227ee052114be9604a9bf84eb8c2476a52f9da8c5a7759dbb33cb

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