Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b59f5bb6f1f210d…

MALICIOUS

PDF

141.8 KB Created: 2020-07-29 09:14:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1882bbdd7fb9c55ef8bda1b79ab77b4d SHA-1: 8115d6310da8b2104d03b8b6a4ea0cba56db2416 SHA-256: 0b59f5bb6f1f210d00abd809cfff2aa0ca808b9ce0752a30c0150ac4eeeb4e0c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to a redirector infrastructure identified as malicious. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to drive traffic or distribute further content. The ML classifier also strongly flagged this PDF as malicious. While no scripts were directly extracted, the embedded links are the primary attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=i+cavalieri+dello+zodiaco+hades+episodi In PDF document text
    • http://files.chloescheel.com/uploads/1/3/1/4/131407818/vimuzowumezikex-xorikomi-sebarobefewifu.pdfIn PDF document text
    • http://files.22ave.tv/uploads/1/3/0/8/130874594/c04ee.pdfIn PDF document text
    • http://files.cofchristslc.org/uploads/1/3/1/4/131453370/burufozukupuxubulof.pdfIn PDF document text
    • http://files.mikkiscreations.shop/uploads/1/3/1/4/131453053/lazopuwuwokes_vuxewadejene_xizumox.pdfIn PDF document text
    • http://files.kiyashanti.com/uploads/1/3/0/7/130775002/moxotute_zokekabo.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/1/0431/1325/0965/files/firemikogavorewudenolupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/44528135528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3986/4485/files/duketimisotomotajamadelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/jutorujazigafid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6641/6549/files/pitew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/54980903056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9973/2635/files/kopepugaposupazowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/95233988859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/29799339940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9177/8965/files/35703055579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8499/7017/files/najuzalesixededa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4640/2198/files/52938447326.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001729d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1729D 37732 bytes
SHA-256: e4bf21243b78e295b522be40e7f925e66b08a679c456f0e40534351159b8c253
font_01_sfnt_off0001e795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E795 4812 bytes
SHA-256: 3e198d3d48ee77f0ff60670989d028898dffeea35c070ce22aed681c21ee0929
font_02_sfnt_off0001f7f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F7F8 15612 bytes
SHA-256: 743167f1fcc219b8896670172f430b6409d2a25a5e3417580295ce2152d7456c