Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddbb165e6c3d7c6…

MALICIOUS

PDF

45.6 KB Created: 2020-10-06 20:06:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-25
MD5: b20bd259cb5a0bdf644fc6056b781c91 SHA-1: 513f6c754ca8890fc974cec255c5e39836ace8ea SHA-256: 3ddbb165e6c3d7c64ef5a5521d7e282f3c72f9a0ba9e0f8ea68fff24af654f4e
194 Risk Score

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://cctraff.ru/strik?keyword=john+gray+books+download In PDF document text
    • http://files.mimiharding.com/uploads/1/3/0/7/130775280/sijopu_supatibaze.pdfIn PDF document text
    • http://files.lexxctf.com/uploads/1/3/1/0/131070202/xobudosasilifa.pdfIn PDF document text
    • http://files.gaustinpaintings.com/uploads/1/3/2/6/132695925/5508732.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/1/0435/3835/0231/files/lg_washer_wont_turn_on_after_power_outage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8307/8048/files/fubifekujoxanizab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1221/7241/files/36109369058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5540/5992/files/78439212354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4146/7799/files/black_desert_online_warrior_pvp_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9917/1230/files/woodbine_live_stream_mohawk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5122/0134/files/trueway_asl_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6027/8949/files/48890698425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/46229896897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/53829404442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8620/7894/files/bunny_tales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1747/8044/files/the_beginners_guide_coda_real_person.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D9 5472 bytes
SHA-256: 1c02ec6ff54e2318233abf6b67827b237a667f1613a99732fec2147602d06ffd
font_01_sfnt_off00008580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8580 10484 bytes
SHA-256: a2ebd3827103aaebf5f217edeb0bc72bab4009eea196faac9955d2e63bb95748

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