Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c43511bf7741caa…

MALICIOUS

PDF

35.0 KB Created: 2020-08-28 01:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b636a8ff2010b1e8b787468e7977b48 SHA-1: 2b47410c0acff82428922513893b6e876d19cf6c SHA-256: 8c43511bf7741caae60184a2b25cb25838d3f53dfae882d986622f4d5c115640
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 a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.ru'. The document body, though partially corrupted, contains text related to a TV show and the PDF generation tool, suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting users to malicious sites through these embedded links.

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=cesur+ve+g%25C3%25BCzel+english+subtitles+episode+4 In PDF document text
    • http://files.strawberrymoon.co.uk/uploads/1/3/0/8/130874197/muluxisowip.pdfIn PDF document text
    • http://fejopit.heswallsquash.com/uploads/1/3/0/9/130969536/gedoneditoxadabot.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/1/0461/4245/5961/files/adblock_tor_browser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9259/0236/files/free_ebooks_for_kobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/82687132659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5649/4757/files/2018_alfa_romeo_giulia_quadrifoglio_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3337/0522/files/sefuvotimiwibaradu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/no_corestorage_logical_volume_groups_found.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4448/5790/files/90890084080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7241/3079/files/fazokik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4191/5042/files/believe_in_yourself_joseph_murphy_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5068/6874/files/brastemp_maquina_de_lavar_11kg_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1062/8511/files/ponefuzege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9688/3614/files/lofibofijitirofawedaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0203/5354/files/2123228966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1552/7833/files/switch_controller_pro_android.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 3

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_off000048f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48F3 5372 bytes
SHA-256: 86a4df6d69b3ab175130349331cc367b448e93d2a7f254279e62e47cc1c56973
font_01_sfnt_off00005b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B00 10616 bytes
SHA-256: 1e982109e0066ac5a26451241d608cf60e40fcaffc3bd590a02f84843f270764

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