Malicious PDF — malware analysis report

Static analysis result for SHA-256 39e4ce99272ef2c8…

MALICIOUS

PDF

39.6 KB Created: 2020-08-21 14:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 27f3665e618956404e353154dcceaf71 SHA-1: 63a2f0bb630bb0ec39304457bbd81d3cd539d997 SHA-256: 39e4ce99272ef2c8c4db9b68b5e25d844331d6a911f772f4d8ffb8959e903b12
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, 'https://ttraff.ru/pify?keyword=bedu+pako+baramasa+full+video+song', which is flagged as malicious. The document also hosts a large number of links to other PDFs, many hosted on Shopify, suggesting a link farm for SEO poisoning or to obscure the final malicious destination. The ML classifier strongly indicated maliciousness, supporting the presence of malicious links.

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=bedu+pako+baramasa+full+video+song In PDF document text
    • http://files.atkinsondesignsolutions.com/uploads/1/3/0/7/130739004/tufawori.pdfIn PDF document text
    • http://zakavu.cloudnetgocanada.com/uploads/1/3/0/7/130776791/9339141.pdfIn PDF document text
    • http://files.alexisangels.net/uploads/1/3/1/3/131379183/sijorofiza.pdfIn PDF document text
    • http://rixob.refresche.net/uploads/1/3/0/7/130738568/695676.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1301/2641/files/vapawidegab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0583/6444/files/caged_guitar_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/55218907631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2629/8533/files/form_5329_t.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3749/7243/files/lugaxijazowezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4274895189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6258/1658/files/airlines_alliances.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2508/4065/files/que_es_anlisis_foda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0897/4235/files/83819178330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/gurekare.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_off00004d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D98 5676 bytes
SHA-256: a47daba3018827aceccd984ffaba28bd45a0424450f56f34df32bbde91c6b7e9
font_01_sfnt_off000060d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D3 10260 bytes
SHA-256: 1957be95fbac4ebd87d717f3a851886419fde5fcd147c8c7544a06babfcb4aac
font_02_sfnt_off0000841f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x841F 3392 bytes
SHA-256: dd53a3c3b2ef009f0f469f8f003160cdbd19ab4cbee80c16f3abb387d723f615

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