Malicious PDF — malware analysis report

Static analysis result for SHA-256 66af9a808f514bd8…

MALICIOUS

PDF

35.4 KB Created: 2020-08-10 14:40:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a74add571b803697cf0297e263a09cfe SHA-1: bcc65dc3a82e648f42b10aea81ec6252383e6ffc SHA-256: 66af9a808f514bd8844f50f818770f571251bb7d9c4d3af6b04ad1c89b5b3ec5
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a free download for a technical document, but it redirects to malicious infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=functional+analysis+balmohan+limaye+pdf+free+download, which is flagged as malicious. The document body itself is heavily obfuscated and contains embedded URLs, suggesting an attempt to disguise 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.cc/pify?keyword=functional+analysis+balmohan+limaye+pdf+free+download In PDF document text
    • http://files.christianlisker.com/uploads/1/3/1/4/131453870/5be2971.pdfIn PDF document text
    • http://nitivuwa.addressphonelist.com/uploads/1/3/1/8/131856907/251f921.pdfIn PDF document text
    • http://files.mckennahomes.com/uploads/1/3/0/8/130874474/9141602.pdfIn PDF document text
    • http://files.keenbeancoffee.com/uploads/1/3/1/3/131381046/91da89d19.pdfIn PDF document text
    • http://files.spectraltech.org/uploads/1/3/1/4/131437711/vukipovosokeke.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/1/0438/0744/1053/files/vejelinuzolesixux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/tadabazelale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4991/7333/files/69024695405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8609/4241/files/55793005302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/nakufufodirosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/89609430639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3262/4808/files/wasuxopejotizobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/83313225568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6710/5687/files/95086126499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/spoken_english_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5841/2185/files/php_generate_from_html.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_off00004aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ACA 5684 bytes
SHA-256: 4faa24054662713746460d9442ad00a7395910e945fe53f3c0000220c0e547cc
font_01_sfnt_off00005e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E05 10096 bytes
SHA-256: 5f6fd50f0a9046bb34b82306a79d7c622be3d9a6d5e7cccc3e0735d6080a4ac1

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