Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6f0167fc172fa0e…

MALICIOUS

PDF

34.4 KB Created: 2020-08-09 02:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74c8255dfaeaca3144c3eea6b5355143 SHA-1: fbb9b44479914f951281c870facfd42586c0da7a SHA-256: f6f0167fc172fa0edf70d8d772e3aef169cee471fff19b5ed751ebb5761394c1
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, suggesting a link farm or SEO poisoning tactic. One of the primary links, https://ttraff.ru/pify?keyword=coordinate+plane+practice+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure. No scripts were extracted, and the PDF structure itself does not indicate further malicious functionality beyond the redirection.

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.ru/pify?keyword=coordinate+plane+practice+pdf In PDF document text
    • http://files.hinsdaleracquetgang.com/uploads/1/3/1/4/131407227/bde8be6e5.pdfIn PDF document text
    • http://files.aromaticsalt.com/uploads/1/3/0/9/130969663/zewatiki.pdfIn PDF document text
    • http://files.developingfemaleleaders.com/uploads/1/3/1/4/131406800/4652894.pdfIn PDF document text
    • http://files.extol.co.nz/uploads/1/3/1/3/131383544/2751241.pdfIn PDF document text
    • http://files.curvygirlzplus.shop/uploads/1/3/0/8/130814716/7682149.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/1/0434/6026/4086/files/is_11255_part_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9219/5993/files/fill_in_the_blanks_with_articles_and_prepositions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/29513669783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mituvazejuremoposanizama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/automobile_engineering_notes_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1701/7243/files/pevufibevire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/7033221006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8100/6246/files/business_english_activities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0655/7340/files/48791526611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/investigacin_cientfica_definicin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/67758431559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/pagav.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_off00004a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A03 4876 bytes
SHA-256: 43b7c414ed40d1b88bbb4d85d5f0f149dbaf5f47c5b9e655f46099132b1ef808
font_01_sfnt_off00005aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA4 9496 bytes
SHA-256: 3f014c06dbcd30f03c095a9102124d4a924533f381782cb9d65ea9cc0a191c99

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