Malicious PDF — malware analysis report

Static analysis result for SHA-256 c27a2a9997fe455a…

MALICIOUS

PDF

49.5 KB Created: 2020-08-17 09:43:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0e67000f87c889f49e5aa545a4ff2180 SHA-1: a7fca4c7594d2fa60f472d881e5af9c87779b5c1 SHA-256: c27a2a9997fe455aa8fc11a316ba0b4610d9927507c37153c49a2ac557de64e0
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 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a reference to 'best hd movies', suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, including one to 'cdn.shopify.com' which is likely part of the distribution infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=best+hd+movies++sites+for+pc In PDF document text
    • http://files.reemancrc.org/uploads/1/3/0/7/130775675/9509020.pdfIn PDF document text
    • http://lavifakip.thepaintedpalm.com/uploads/1/3/1/4/131454012/lunowusoz-binuxu-mivepapisifedag-biwurob.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/1/0451/4293/3657/files/assembler_document_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/56496662806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/48406431420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/agonistas_y_antagonistas_de_gnrh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/tibifene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/springing_tiger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/sawewanudet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000776f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776F 4944 bytes
SHA-256: a909e819637bee64509f33c5a77c32829bb6b45cd9782285cd3f907f8b2c6b20
font_01_sfnt_off0000884c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884C 10288 bytes
SHA-256: ba7cb31ed4dddd04311e4885bf9f231108a3b8b10244bb48eb1b4644c804d5a8
font_02_sfnt_off0000ab63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB63 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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