Malicious PDF — malware analysis report

Static analysis result for SHA-256 d123bfbf1404b548…

MALICIOUS

PDF

38.4 KB Created: 2020-08-21 00:32:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8222be6ddc8068ee3eed41bc23bb576 SHA-1: 19deb16a6a27e9be6284d7d7fa9df2f958d35887 SHA-256: d123bfbf1404b548fd831580ebc865fcd4d5be40fab54f91d63dc102a4098cf9
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=headway+beginner+workbook+answers`. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF title, suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=headway+beginner+workbook+answers In PDF document text
    • http://files.gladwinfmc.org/uploads/1/3/1/3/131383838/komeveroju.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/1/0434/4460/0999/files/candlestick_explained.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/mekezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/accounting_and_finance_an_introduction_eddie_mclaney.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/fukotirowuradakosoweduva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8596/3168/files/nosezagipid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/moxovabozakumoburi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/pepigexaresaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3825/files/chemistry_textbook_grade_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8345/4872/files/64520370467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/26256216093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4066/0891/files/62200298193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/proyecto_de_investigacion_sobre_el_bullying_escolar.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 2

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_off00005734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5734 5320 bytes
SHA-256: c4de6e389e5cf168ffbe4f3554784456b410e646b80677350a9418d0525b96a6
font_01_sfnt_off00006966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6966 10352 bytes
SHA-256: 4fa622abb0936aeb9c2305158d5f341964a2f44bea606563272fa69b0c288db7

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