Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c778aaffaf243e…

MALICIOUS

PDF

58.0 KB Created: 2020-08-10 09:21:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: daaec4dcbf2ca896d78fc27f098a53a0 SHA-1: f3336901e2f75f67662e1618ab24d2b8b793c6d8 SHA-256: 01c778aaffaf243e32829aff3e245b8e6b3801e885003d2af29a0327bf2ebec5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary redirector URL is https://ttraff.com/pify?keyword=complex+numbers+examples+pdf, which is likely used to funnel victims to malicious sites. The ML classifier strongly supports the malicious verdict, indicating a high likelihood of this being a phishing or malware distribution lure.

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.com/pify?keyword=complex+numbers+examples+pdf In PDF document text
    • http://viruneget.radio.10losttribes.com/uploads/1/3/1/4/131453850/9674075.pdfIn PDF document text
    • http://files.gainfi.com/uploads/1/3/1/0/131070109/kozudege.pdfIn PDF document text
    • http://files.schumacherbrothersfencing.com/uploads/1/3/1/0/131070317/838ef66bc19f12e.pdfIn PDF document text
    • http://files.weitzelphotography.com/uploads/1/3/1/0/131070911/9354064.pdfIn PDF document text
    • http://files.msgeekyteach.com/uploads/1/3/0/9/130969754/8039491.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/the_hobbit_wall_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/83126394187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/ammonium_sulfate_msds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3031/3122/files/25911491075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/78790445314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5018/9478/files/xibivuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4687/1974/files/43865826643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6019/1651/files/networking_objective_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4189/0210/files/bounded_rationality_herbert_simon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9243/4343/files/pobemonodavaketolusaferi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7400/8726/files/44375438764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6582/7747/files/fire_works_animated_gif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0088/7456/files/36071349516.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B8 5172 bytes
SHA-256: 7c793c8c4870223aa2d17c3c731aebfb738edd869bc9ceb44b893704e8bf07c8
font_01_sfnt_off00008626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8626 15724 bytes
SHA-256: 515112e4ed02124e34305729c8efaae075c1ae4413eed215d44da8fcf7e3d65a
font_02_sfnt_off0000b790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB790 16124 bytes
SHA-256: ab685d118e9d0b33767e5607c2d3cbfef219238b2805393651c145cae9583a4f
font_03_sfnt_off0000cc8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361