Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec3ec268ded229e…

MALICIOUS

PDF

86.3 KB Created: 2020-07-31 02:54:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b3a767c910919265be1258441fd457d SHA-1: df15c0737cc747f5a63de802656321f42e3c452c SHA-256: bec3ec268ded229e4c4ecf86956250ccbb98080fc49593371978f1280022171e
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, appears to be a lure related to an 'ethnographic study example PDF'. The ML classifier strongly indicates maliciousness. The primary attack vector involves directing users to a malicious URL via embedded 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.cc/pify?keyword=ethnographic+study+example+pdf In PDF document text
    • http://files.slowmusic.pl/uploads/1/3/1/3/131380308/1878492.pdfIn PDF document text
    • http://files.peschketruckinginc.com/uploads/1/3/1/4/131453595/mokiganesalos.pdfIn PDF document text
    • http://files.slow-studio.com/uploads/1/3/1/1/131163643/xasubasozuv.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/1/0434/2035/2677/files/85186577679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/4440321354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9821/7378/files/45352109921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/xitefotakikumarosirim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3756/4823/files/84051735934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/jegizuwaropafutozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/90861711254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/zirirafilulavopepez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5037/5070/files/batukafiwopojoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5274/files/11599040986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5765/0584/files/52511474056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/78517261571.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_off00010f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7B 5580 bytes
SHA-256: 6cc79289b73e1516496585dbb849402fea0f81cca580af1f32c792563faea13c
font_01_sfnt_off00012254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12254 12952 bytes
SHA-256: bd22e10e9e2a468bf9b4e2dc807872e68e922a29e8f38d26ec4a1275759f9057

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