Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d2ff72aee43582…

MALICIOUS

PDF

50.1 KB Created: 2020-08-12 04:44:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac4593f10be8da74564c0faf64bd984f SHA-1: 2a8aa5a1afef149007c5b51f10d8d2e951a6a5ee SHA-256: 86d2ff72aee43582a8ac35c0a9d4b897c74067b028c78846d29aa0f43dbe5602
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links designed to redirect users to a link farm, masquerading as educational resources. The primary redirector URL, 'https://ttraff.cc/pify?keyword=cbse+class+12+accountancy+book+pdf', is flagged as malicious. This indicates a phishing or scam attempt to lure users to download potentially harmful files from the linked sites.

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=cbse+class+12+accountancy+book+pdf In PDF document text
    • http://files.rootedoak.ca/uploads/1/3/0/8/130813135/tafebusixozu-tofotakisoxema-mewilapogarel.pdfIn PDF document text
    • http://duladika.callowayfootball.com/uploads/1/3/0/7/130776791/c0e4af3f7c.pdfIn PDF document text
    • http://files.joedyton.com/uploads/1/3/0/7/130739593/vavoxikubixolipubego.pdfIn PDF document text
    • http://files.liyanamusfirah.com/uploads/1/3/0/9/130969489/6626778.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/1/0437/1913/1285/files/27298443303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/rewisodijiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1280/0159/files/lodibuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6103/9524/files/autogreffe_de_cellules_souches_hmatopotiques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9446/5948/files/battletech_board_game_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/nixufisizezapuvexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2510/4028/files/nubazudimaxemodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2904/4119/files/ccsp_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3664/5275/files/87684226241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/mafosujala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/fivur.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_off00006aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEA 5448 bytes
SHA-256: 93143b78844784558879c34a4e1839323a07bd5d605d50c18f5a7d2cd13d997a
font_01_sfnt_off00007d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D90 12104 bytes
SHA-256: 9f4848e8a4a4de01224f7243a2e65df16af52883bbdf77236b3f307f40fe64da
font_02_sfnt_off0000a634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA634 16084 bytes
SHA-256: 192e1cf8743c95d644f41697cb32af4f2bd92b7888e96aef7f61385a8dcfe722

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