Malicious PDF — malware analysis report

Static analysis result for SHA-256 87de9ab79c3354b3…

MALICIOUS

PDF

40.2 KB Created: 2020-08-15 02:14:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: feab2d4e008fc351d80365aea1ba8552 SHA-1: e4df92ba30d6edea78d1ecab3c9a7bf03e8d4f70 SHA-256: 87de9ab79c3354b33d091af7daf0ccaf13715cd7d65dec39fe7ac080cf56c3a0
194 Risk Score

Malware Insights

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

The PDF contains a deceptive lure promising free movies, which is a common phishing tactic. It embeds multiple links, including one to a known malicious redirector at 'https://ttraff.cc/pify?keyword=english+movies+hd+free++sites'. This redirector likely serves as a gateway to further malicious content or exploits. The ML classifier also strongly indicated maliciousness.

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=english+movies+hd+free++sites In PDF document text
    • http://files.wichitafallsbridge.com/uploads/1/3/1/6/131606128/624ac.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/1/0429/3538/6275/files/mazubiposomivif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/4377/8723/files/arkitektura_e_kompjuterit_agim_cami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3957/9546/files/tenawufelumalije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/bebosajiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8574/9665/files/mukilulolekugug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5431/8239/files/windwalker_stat_priority.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fovurasavelibegesixaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1743/6327/files/zizowupekojovupepuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.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_off00005ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF2 5128 bytes
SHA-256: 092d7c874b632cc4116ada2db2e8eed4ea44e908f87f1bc36c3c63c539c8b779
font_01_sfnt_off0000713f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x713F 10376 bytes
SHA-256: 02c997c5326d26d97c02b1dd9eab97bb3fe1359958eda5c755ed55f83e2dfde2