Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb64d7390291e8d9…

MALICIOUS

PDF

43.0 KB Created: 2020-08-04 05:49:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09bbd5258c928b6ed9fc175fc08c6821 SHA-1: 4c82ee7568e69ecc97da36d4ab5557ae2f9a4378 SHA-256: bb64d7390291e8d973c3ec283b1b55cd2baa0d52b821c3e54124ff1d69cf9a9c
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link 'https://ttraff.com/pify?keyword=important+terms+in+accounting+pdf' leads to known malicious infrastructure. The 'SE_INVOICE_LURE' heuristic suggests the document's content is designed to trick users into clicking the link by appearing as an invoice or important document. The presence of numerous other links, identified by 'PDF_SEO_LINK_FARM', further supports a malicious intent to distribute harmful content or engage in SEO abuse.

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=important+terms+in+accounting+pdf In PDF document text
    • http://files.melaniebartelart.com/uploads/1/3/1/0/131069890/5621904.pdfIn PDF document text
    • http://files.istudentsduke.org/uploads/1/3/1/3/131379296/beraruvumifivenab.pdfIn PDF document text
    • http://files.berrysleek.com/uploads/1/3/1/4/131437117/6148322.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/1/0434/6429/4557/files/27807241986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3989/1357/files/computer_awareness_book_free_download_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1796/0600/files/deberobisezemakudigufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/10390249226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/litigod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/rezubiwamefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5567/6583/files/jidomubataxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1348/9318/files/fanotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0300/files/97613385117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/wozugekimazujivadarixebin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/51873843182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/mariner_15_hp_outboard_manual_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/kugolekitotulugeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5425/0654/files/the_seven_chakras_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/69138800175.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_off000068c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C6 5380 bytes
SHA-256: d724ab39ad449d47d6cc138e2d97f7c529ccf1636de7cab5d1e6ce83283f6c6b
font_01_sfnt_off00007af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF5 10436 bytes
SHA-256: 4ab48572f833ca3c9bebb9aa01c0ce027f59fbbc420e8881621a73d02c2feac8