Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bfbbf2b3c555e84…

MALICIOUS

PDF

38.2 KB Created: 2020-08-12 15:36:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85b9909cdfc7c3508a7e882ed270920e SHA-1: 6f0d606846f5bb795517cb910250a582d0187195 SHA-256: 2bfbbf2b3c555e84ae4576b75a3eeeaf410e3210f67314dc045ae8311cec209e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=alejandro+aravena+elemental+book+pdf`. This indicates the document is designed to lure users to malicious infrastructure under the guise of providing a book 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=alejandro+aravena+elemental+book+pdf In PDF document text
    • http://wipizape.wheelsandteal.com/uploads/1/3/0/7/130775634/19b515bc462d4.pdfIn PDF document text
    • http://files.redbearoriginals.com/uploads/1/3/1/1/131164009/62aa2c7a76.pdfIn PDF document text
    • http://files.jennifernunweilerrmt.com/uploads/1/3/0/7/130739116/jofine_lirakimoja.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/1/0448/4435/1649/files/ritmos_circadianos_humanos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/569054019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2804/3160/files/ladus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1216/0679/files/romuwemozuwun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/angioedema_hereditario_y_adquirido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7035/7653/files/puxejedetiporel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4755/8037/files/40738324536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/vanerevasezigedawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/5113741464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6539/3831/files/10450249448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/fukipekikag.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 4

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_off00005839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5839 5336 bytes
SHA-256: c5bb54ff68b095bee4e5d6009c86d0cd4053f41170bc9f5372e9c1d1c06e7e1f
font_01_sfnt_off00006a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A55 9940 bytes
SHA-256: 5c606f66e560b7380b89170fa7fafa1fa9c12cdb4e30660552878c8c66a13f4e

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