Malicious PDF — malware analysis report

Static analysis result for SHA-256 c50c7494923eb4db…

MALICIOUS

PDF

37.1 KB Created: 2020-08-24 06:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 589224524dc58a3cd47dfd8f54b0eb12 SHA-1: ab22139284788e07433be8e75ed173a9bd98a64c SHA-256: c50c7494923eb4db596576fabe77ffb6cf8b1d837aadd603b976237a427c3eeb
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=avoir+conjugation+worksheet+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to 'avoir conjugation worksheet pdf', suggesting a lure to trick users into clicking the malicious link. The presence of numerous links and the malicious redirector indicate a link farm or phishing attempt.

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=avoir+conjugation+worksheet+pdf In PDF document text
    • http://pofadiva.jwhitneyart.com/uploads/1/3/0/7/130775565/2726583.pdfIn PDF document text
    • http://files.uplandsrecreationcentre.com/uploads/1/3/2/6/132683137/3658293.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/1/0429/6966/1589/files/jojiravi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/the_red_army_and_the_second_world_war.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18983443830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0538/6657/files/standar_akreditasi_puskesmas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/64457052641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5125/files/fawanisaxevekom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/betedosopinadipisufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7399/4905/files/boveda_72_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/free_vector_business_letterhead_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/tuzekunapejubowilivipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5485/7377/files/kenimen.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44F8 5548 bytes
SHA-256: 892791286fb6edc048cb1235b83ed230f4d05df1b22edc354313b63f8bef1734
font_01_sfnt_off000057e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57E6 9956 bytes
SHA-256: 128196eb6e27a0a93724027f37d2ed4f9b14fc73301e0d5af7f885bfb55d4aa8
font_02_sfnt_off000079f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F9 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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