Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9133a3f20b424ce…

MALICIOUS

PDF

41.1 KB Created: 2020-08-11 05:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3e6f10bc7e6f55012b07e61d6929b7e SHA-1: 74184cbd381ead9a80ef0b6fdd4f19220cd4e2e9 SHA-256: f9133a3f20b424ceeacef6aac27f7b5a936c948f4900a93cdb591f016283f436
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/pify?keyword=cours+pour+apprendre+l+italien+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0431/9156/6493/files/28765397862.pdf'. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL and several other URLs that appear to be part of a link farm.

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=cours+pour+apprendre+l+italien+pdf In PDF document text
    • http://files.creatingtolove.com/uploads/1/3/0/7/130775400/1840834.pdfIn PDF document text
    • http://files.prideandjoymonogram.com/uploads/1/3/2/6/132695472/kugutadexi.pdfIn PDF document text
    • http://files.befriends.org.uk/uploads/1/3/0/9/130969434/rokifunerasum-mupuralo.pdfIn PDF document text
    • http://files.tamsjets.com/uploads/1/3/0/8/130815115/lijipilutamamobaba.pdfIn PDF document text
    • http://lifemori.laurabain.com.au/uploads/1/3/2/6/132695278/wilejonugik.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/1/0431/9156/6493/files/28765397862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/totekalovuselepuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2071/4137/files/mavavexojagotixale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/46314481174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9212/2536/files/6751337098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/center_of_gravity_and_centroid_solved_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/womapuzodozexojevewov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6559/6321/files/19174484081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/hemolytic_uremic_syndrome_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4456/0281/files/16637994522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1531/5351/files/xisimulisudo.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 7

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_off00006145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6145 4940 bytes
SHA-256: 6ee26a137f8f9c6728dc93c93e7a12a66f915d2cca49179de1317bcd9c32993f
font_01_sfnt_off00007222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7222 11028 bytes
SHA-256: 79c8d7bb3b3b3149aa48b47a657882af40ffe85a2884b0dab6261efe8bbb2e25

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