Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e79f39c6d6872cc…

MALICIOUS

PDF

69.2 KB Created: 2020-08-04 03:35:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5312bc3cb049815bb2fc141aea9c51ec SHA-1: 5342d058d8f9be1107907354ba33a9eafe935f68 SHA-256: 7e79f39c6d6872ccdf243a6360d670b441b0c72766a673b277ba3ae76cf14fc5
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text suggesting a lure related to an 'Appetizer recipes book pdf'. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm designed to attract traffic and potentially mask malicious activity. The ML classifier 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.cc/pify?keyword=appetizer+recipes+book+pdf In PDF document text
    • http://files.mr-stevens.com/uploads/1/3/0/7/130776864/zoxakaso.pdfIn PDF document text
    • http://files.chefreginacooks.com/uploads/1/3/0/7/130739385/zezutitaled-bunif-lepiwapar.pdfIn PDF document text
    • http://files.ginasbookplace.com/uploads/1/3/2/7/132712040/kuvowodulu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/gipemis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/mass_effect_3_romance_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6041/0006/files/tuputazupikizegibuguk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8947/5237/files/jedemobilarasenabumiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/nj_driver_s_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/vebanepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jufozigazagapuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/besivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/kewaunee_fishing_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/weruziwudenabejidomozaxad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/mufipajovijokos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/81104274992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/dujag.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

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA313 4832 bytes
SHA-256: 6ebed7541714709004421610b4ea2b7aaa23ef86a8df9018a139b88b5e3669a7
font_01_sfnt_off0000b38d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB38D 2276 bytes
SHA-256: fd3af4f5ee512989a0a7d39c73e4a258a78da53bdb5c9fa393c7ca215ab377c3
font_02_sfnt_off0000bdb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB3 10392 bytes
SHA-256: 5734f570ce09199a45607d56e970a4964dd6a73b663f2da9d85822d4ebf56659
font_03_sfnt_off0000e160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE160 16760 bytes
SHA-256: 9d3dd6aa84735360e44f8c8ed21911ccf869a7c008eff467fe737f33df431195
font_04_sfnt_off0000f86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86D 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230