Malicious PDF — malware analysis report

Static analysis result for SHA-256 712d5e8c7779790b…

MALICIOUS

PDF

43.8 KB Created: 2020-07-22 12:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5db91bd057744fe258ef8a103b7365a2 SHA-1: 80e681d4fe64559fb73ab03cd2a404df2839670d SHA-256: 712d5e8c7779790b03c658047451e2c343e0a0be6e1c9164c13d100047918fb0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, suggests a lure related to 'wind turbine power calculation'. The presence of a link farm and a redirector indicates an attempt to drive traffic to potentially malicious sites, likely for phishing or malware distribution.

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/wb?keyword=wind%20turbine%20power%20calculation%20pdf In PDF document text
    • http://files.meetthebrentstones.com/uploads/1/3/1/8/131856626/sipebajapas-xamamejer.pdfIn PDF document text
    • http://files.bluecanyonceramics.com/uploads/1/3/0/7/130775543/6007362.pdfIn PDF document text
    • http://files.tecumsehtrailsoffroad.com/uploads/1/3/1/4/131411542/sidazuvasonafo-jalajoxox.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/1/0429/6241/9863/files/75910819320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/nimanoremadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68513135127.pdfIn PDF document text
    • https://zifalen.files.wordpress.com/2020/07/70805643647.pdfIn PDF document text
    • https://bulimogip179696400.files.wordpress.com/2020/07/29477352636.pdfIn PDF document text
    • https://telabawogevo.files.wordpress.com/2020/06/kazovepuzajokivapad.pdfIn PDF document text
    • https://wavogufelo.files.wordpress.com/2020/07/18357847439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2768/5799/files/40480344385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2661/files/fapemamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6086/2874/files/dezeketifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/3545278114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/zikabafixowifobufipesotox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/67357374299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/lefam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/43452408310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4071/0562/files/danopofij.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D28 5100 bytes
SHA-256: 0b0ac63ae9e31d7cc1dd0a2ff63cdd2fb1bf866a1a4fea6e83bf3c5869b209d3
font_01_sfnt_off00007e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E94 10184 bytes
SHA-256: d62e7cce6d714e597d4a5f57ef4fae643a25afc9a90003a357171f3418589ba9