Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fc7baa5086e7f8b…

MALICIOUS

PDF

51.3 KB Created: 2020-08-08 05:03:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 70b9f48413331d2f9e0cd8e84252f83b SHA-1: 8dbb61df98a7a96e48ee5beeb1454f13e4e0c5f2 SHA-256: 5fc7baa5086e7f8b3ff3f852feb9db80db8b2d7bc09c7a22d53b1d465fff5cf1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external PDFs, many of which point to a redirector service. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=antologias+de+cuentos+pdf, which is flagged as a malicious redirector. This suggests the document is part of a link farm or phishing campaign designed to redirect users to malicious sites under the guise of providing content.

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=antologias+de+cuentos+pdf In PDF document text
    • http://naxokut.farmerandhippie.com/uploads/1/3/1/8/131856257/davane_jumut_zujekun.pdfIn PDF document text
    • http://files.customweddingsofcolorado.com/uploads/1/3/0/7/130776208/jegotixa.pdfIn PDF document text
    • http://files.broadcastcoffeeroasters.com/uploads/1/3/0/9/130969448/bubibize.pdfIn PDF document text
    • http://files.tzaddi.net/uploads/1/3/0/7/130775970/jewozerigapu-mabekoziku-dukug.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/1/0439/9579/1518/files/how_to_use_wii_u_usb_helper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/luroxumobibedobemazetogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1189/7504/files/jumusisizoloda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/multi_step_equations_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/52559776439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7405/9426/files/43038904201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/jatetedotazowopisutido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3430/3912/files/vesafelulanisus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/chapter_2_neil_simon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/69747720403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7525/5972/files/mapisofuxisedekilisazil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A04 5096 bytes
SHA-256: 12fdeaf8967305083bb4e23c6d520752480724d0c1baa296acb3764ad516d37a
font_01_sfnt_off00008b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B70 11760 bytes
SHA-256: 5d0814da3a586419dd8f810142eca5d81e45f0a618f4f5f16261bc673b6fd476
font_02_sfnt_off0000b0c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0C1 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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