Malicious PDF — malware analysis report

Static analysis result for SHA-256 399a677f286538f2…

MALICIOUS

PDF

46.9 KB Created: 2020-08-26 12:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 21d93443c3bb4d111918a9e631229eec SHA-1: 87aa5270cbbd00f7b83f6746e805af4fcd96fee8 SHA-256: 399a677f286538f2971fdfe7e28aa86ee22ac9f858fbe0f4836687960dfd5c2a
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that, when clicked, leads to a URL designed to trick users into downloading a movie. The document body, though heavily obfuscated, contains text related to movie downloads and the malicious URL. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic fired, confirming the presence of a link to known malicious infrastructure.

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=arrival+hd+movie+download+in+hindi In PDF document text
    • http://files.nlgsacramento.com/uploads/1/3/2/6/132683357/3557768.pdfIn PDF document text
    • http://jorosef.anti-agingbyrjxjelly.com/uploads/1/3/2/3/132303354/8686563.pdfIn PDF document text
    • http://geags.com/18e07xIn 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/1/0440/0922/6398/files/comparing_numbers_worksheets_year_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/polekinefiwato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/pagudogavuvenidelowaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1578/2048/files/26729012678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9057/6285/files/contamination_control_engineering_design_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7639/4648/files/41866189728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3622/1341/files/rezugasolufalulezujixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6450/9094/files/mufedafutesusekinebup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1945/3095/files/explosion_gif_png.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8071/2346/files/8633423897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1827/2423/files/laxamivitunumutebu.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_off00007852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7852 5028 bytes
SHA-256: a361ed086f8d7d8aa14ee292127ae6f6fa1ed305291fc9569d9a1e6c15aceb7d
font_01_sfnt_off00008958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8958 11000 bytes
SHA-256: 31a1536e8c4b4894c2b36b1256af63c62b5ead6ec4a9fa308eba6eb98c6d1faa

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