Malicious PDF — malware analysis report

Static analysis result for SHA-256 af3a6a55c4939f25…

MALICIOUS

PDF

88.8 KB Created: 2020-08-05 11:34:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4189549165d11de3c93665a72dec361 SHA-1: fc725812ac171e542e2d5597a13a47250cf5863b SHA-256: af3a6a55c4939f25d73985b914d87e5f42c6632ca297ad32e1b9d6b806be5837
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, specifically pointing to 'https://ttraff.ru/pify?keyword=online+bible+kjv+pdf'. This URL is presented in the document body, disguised as a search result for a Bible PDF. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious.

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=online+bible+kjv+pdf In PDF document text
    • http://files.santarosapool.com/uploads/1/3/1/8/131856121/rigupakufi-negetefame-sanokapadawuw-wifefatuwizu.pdfIn PDF document text
    • http://files.earforlanguage.com/uploads/1/3/1/4/131454207/vizuta.pdfIn PDF document text
    • http://files.buiebeadz.com/uploads/1/3/1/4/131483830/zolorixitar-tolakawasob-vanusuwofov.pdfIn PDF document text
    • http://files.dragondistillery.com/uploads/1/3/1/4/131483002/vilexu.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/1/0431/6404/1373/files/97025685392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2282/8198/files/guwufufefixiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/fileruwaxisim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/75428500722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3970/9605/files/realtek_ethernet_driver_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/vibamupuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3066/7673/files/77026226685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0281/4876/files/99906950547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3725/9938/files/luvokodofalesin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/ghost_mushroom_farming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9375/4009/files/mojoliworaxevulow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1667/5740/files/wusube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7908/9824/files/timemudokor.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_off00012296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12296 4920 bytes
SHA-256: 82719fe86cf0289c3a6a6f31ca222d05d313301c055a589d2ea38c8166f25ae2
font_01_sfnt_off00013372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13372 9992 bytes
SHA-256: 51ce8a0e1f9f72ecf6ab62e98ae021ccc1b5e643025c9aa02e1e3d1592a11739

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