Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9dbc9ae6dbe91f8…

MALICIOUS

PDF

86.9 KB Created: 2020-08-10 21:06:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a5926e227035abb094c158aac34975b9 SHA-1: d05ab51058a52ad5300980bc1c986f6d2a68a92b SHA-256: e9dbc9ae6dbe91f80b7f03cffadd91a3d9522516384710b7b52db92034d30aa4
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, and 'SE_INVOICE_LURE' suggests a pretext for the user to click the link. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern. The presence of numerous external PDF links also indicates a link farm strategy.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.com/pify?keyword=auditing+notes+bcom+final+year+pdf In PDF document text
    • http://files.brucedouglasreevesauthor.com/uploads/1/3/0/8/130873997/5cfa47.pdfIn PDF document text
    • http://files.abookstudio.com/uploads/1/3/1/4/131483372/gutipijasazotajob.pdfIn PDF document text
    • http://files.rootsoflove.ca/uploads/1/3/1/4/131483281/a51bec804eb50.pdfIn PDF document text
    • http://mujekuto.thebeingmissbblog.com/uploads/1/3/2/8/132816066/bebuvenarakujimagudu.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/1/0430/4509/3533/files/80994077369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2033782386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8257/8088/files/nsk_taper_roller_bearing_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3228/9175/files/jipizuwamukuxipugijewef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/windows_7_hosts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9275/4076/files/sample_contract_agreement_for_services_rendered.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/fasenuzoxewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4897/6027/files/11632020614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/wukimuxevija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/mimelajenenaxavamokokine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8271/9136/files/92073163772.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 8

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_off00011771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11771 5708 bytes
SHA-256: 74f0e04cd96ef28e6d2c284af030d786207a1951f95b4249550fa06ce6ae8432
font_01_sfnt_off00012ac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AC3 10352 bytes
SHA-256: 1327eb789423dc617c57aa1acd2f0731042a4553cdd203912c44b2671b580aa8

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