Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bceba3c045d15aa…

MALICIOUS

PDF

51.7 KB Created: 2020-08-07 23:29:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67b00e61cb0f2a0d89828a63250636b5 SHA-1: 4ba2cda4900e6eafabf2081dd5d06d2b74508269 SHA-256: 0bceba3c045d15aa3e87ac8e1a614a22f4dad02577663e2b3d6b5c6ea512d1b2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though obfuscated, contains a URL pointing to a redirector, suggesting a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=fisica+ciencia+y+tecnologia+pdf In PDF document text
    • http://files.marksmadmenband.com/uploads/1/3/1/4/131437530/7321743.pdfIn PDF document text
    • http://files.sagemeadowranchllc.com/uploads/1/3/1/3/131383777/d0899cb76.pdfIn PDF document text
    • http://wugarivo.newlondonbaptist.org/uploads/1/3/1/3/131379530/06c83.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/1/0433/4118/5189/files/zigisefafepulenobatunirab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6555/7670/files/atamasthana_sinhala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8431/6823/files/git_branch_names.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9206/files/sulura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98908457197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1450/3075/files/81891487828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/mewumividikexok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mikawewetekiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0817/8850/files/mirrors_edge_catalyst_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9080/4893/files/nokez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4716/3806/files/dao_arcane_warrior_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/kaxajepoxusas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/37404243082.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8802 5284 bytes
SHA-256: 2a2ed246bb6911391c9811627e3dd2c13e15c4ac6e24e79a82b098787b5285cc
font_01_sfnt_off00009a27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A27 11608 bytes
SHA-256: f1d37591365db8460256420bf0e35bb1b5c023ec42f616eb2e4aece017a5253c

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