Malicious PDF — malware analysis report

Static analysis result for SHA-256 33b24c480d165e71…

MALICIOUS

PDF

34.1 KB Created: 2020-08-13 02:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1864c851385b6c6ade78f8f822a428cb SHA-1: 8c0abdeb21fab5c7a14ace2db4505f15c1569023 SHA-256: 33b24c480d165e71d66663fe24acf16449b06ec355833daa9e24e3da5df3806f
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a link farm hosted on Shopify, designed to appear as legitimate PDF documents. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is further obfuscated by a keyword parameter. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution.

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=pompe+calpeda+catalogo+pdf In PDF document text
    • http://files.msbfitness.co/uploads/1/3/1/3/131381078/nixapi.pdfIn PDF document text
    • http://wikezopa.bexartspe.org/uploads/1/3/2/8/132814930/vumene.pdfIn PDF document text
    • http://files.geopr.org/uploads/1/3/1/3/131381799/7961937.pdfIn PDF document text
    • http://files.thefishsauce.net/uploads/1/3/0/7/130776826/8202556.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/1/0433/1002/2814/files/golitiwizanakosodogomodux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2486/5685/files/refrigeration_and_air_conditioning_handwritten_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5335/0040/files/gosetovun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/69704313253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/cctv_camera_details.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4362/6912/files/algebra_2_textbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/tesenanepedav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2024/7462/files/33348400196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1615/1455/files/tokudotokut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5041/6793/files/how_far_away_can_mobs_spawn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/apostila_completa_auditor_fiscal_da_receita_federal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97697777452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/kusaxebanixomilasuwuvaf.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 4

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_off00004953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4953 5204 bytes
SHA-256: 36d6f6b5db719fe1c4a785a68a79af7be37f963a50edd01de682cffaa41571c6
font_01_sfnt_off00005af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF2 9552 bytes
SHA-256: a22780b04011607302d6481ca15e2405daf391459090da759845bf2e39c3880a

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