Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7b7dd896a1e2440…

MALICIOUS

PDF

44.8 KB Created: 2020-08-28 07:36:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fdfe31aa6b8ad372585aabe455be650 SHA-1: 414d6c3f34723eab0e9b14527cb497df3dd4f8b2 SHA-256: f7b7dd896a1e24401deed29403096719fda2ff78500537383708a3ea57148526
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify and other domains. One prominent link, 'https://ttraff.cc/pify?keyword=do+d3+athletes+sign+a+letter+of+intent', is identified as a malicious redirector. The document body, though partially corrupted, contains text related to athlete recruitment and the malicious URL, suggesting a lure to trick users into clicking the malicious link. 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.cc/pify?keyword=do+d3+athletes+sign+a+letter+of+intent In PDF document text
    • http://files.inthehoopbysher.com/uploads/1/3/1/4/131437311/sujulow-likowap.pdfIn PDF document text
    • http://dejijopug.veritas-society.org/uploads/1/3/0/7/130739835/6506534.pdfIn PDF document text
    • http://kadodevi.adelantechc.org/uploads/1/3/2/6/132682878/siwiruba-lebuduj-bunibuzowiwo-vofuxa.pdfIn PDF document text
    • http://goleji.annawitte.org/uploads/1/3/0/7/130776367/48aa61.pdfIn PDF document text
    • http://files.yogashak.com/uploads/1/3/0/9/130969910/zevuru.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/1/0434/2117/1864/files/magna_carta_tears_of_blood.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7190/6468/files/3d_shapes_and_2d_shapes_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9223/0558/files/best_reader_ipad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4795/6130/files/python_multivariate_normal_distribution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3728/4762/files/buzosepiriwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8258/7037/files/gungeon_gilded_bullets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6466/3704/files/background_check_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0333/0208/files/3476235630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1887/8104/files/57501109520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/my_first_britannica_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/2566267504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/vetetulox.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_off00007177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7177 5332 bytes
SHA-256: b29414bb8c53f3318c2a7b7c7c9a14e8863985d18e25eecc62af219a332e17b7
font_01_sfnt_off00008392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8392 10120 bytes
SHA-256: 06a943973513d727f26b581d0e660fa8f00d41c351bba25366e1d04133f96848

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