Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9e3f7e2ecf0c35…

MALICIOUS

PDF

48.1 KB Created: 2020-08-09 16:55:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 800c73597ceda8499baf34b0dcb705b8 SHA-1: ff3202c03da97838d8f8404b0fa17c91ebe7bc3d SHA-256: 5e9e3f7e2ecf0c356dd0ab44601980e1432ab31c0990b0418f04b3d5ef32d135
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc), suggesting a link farm or SEO poisoning tactic to lure victims. The document body, though obfuscated, contains the same redirector URL and benign-looking PDF titles, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's a redirector and potentially uses an enable-lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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.cc/pify?keyword=agonist+and+antagonist+drugs+pdf In PDF document text
    • http://files.ethanhamby.com/uploads/1/3/1/0/131070604/e400607bf54e4f.pdfIn PDF document text
    • http://gitelijep.faithtabernaclefellowship.org/uploads/1/3/1/0/131071164/siwitebolupew.pdfIn PDF document text
    • http://files.flimatranslations.com/uploads/1/3/1/6/131606262/9864b75a2ec.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/1/0439/4231/4152/files/botany_notes_for_bsc_2nd_year.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/aprender_a_tocar_guitarra_muy_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9409/8598/files/79017894071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/86837888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2222/9397/files/91114171552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/50942809315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3471/4017/files/borchert_encyclopedia_of_philosophy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3602/4737/files/google_sheets_alphabetize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/55885725484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/babiwivuvax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0575/2997/files/normes_aaoifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4769/0145/files/tezovuzakotefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4608/8349/files/slow_steam_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3151/8622/files/39444645607.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_off0000793b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x793B 5164 bytes
SHA-256: 13f764c6440ff783787bb61e6f8db4f6722f248db082299c097f07b8523bd797
font_01_sfnt_off00008ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADE 12844 bytes
SHA-256: d11518d1e3a4ee7999553ffe80da702691b3f600bd8e51c16dcba83511683658