Malicious PDF — malware analysis report

Static analysis result for SHA-256 f680abc6cefa67f3…

MALICIOUS

PDF

51.6 KB Created: 2020-10-01 15:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: dcd12459a3f3072c45a53d2cdfef89b8 SHA-1: dab3549ec2f9bee944072ba670fe3b2b704dbbc3 SHA-256: f680abc6cefa67f3217baf514bd1c9e7cef77424504c81a6415731535e875fbe
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=monthly+calendar+template+pdf In PDF document text
    • http://kefelu.cpmsband.com/uploads/1/3/1/0/131071297/bonuzefobibozul_pidamuvapiw.pdfIn PDF document text
    • http://files.greatgardenalternatives.com/uploads/1/3/0/7/130775953/3085928.pdfIn PDF document text
    • http://negixosuj.hirsigfrazier.com/uploads/1/3/1/3/131383708/tavon.pdfIn PDF document text
    • http://vuboxokoj.hussamalghamdi.com/uploads/1/3/1/4/131437657/dixaselij.pdfIn PDF document text
    • http://files.paintwithpizzazz.com/uploads/1/3/1/4/131437503/dituwun-xidalebanobuxu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9aaee406-aee1-420c-8ecc-30330ded33f5/25409609743.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/527ebc46-2165-4e94-9e22-7fec452a2ef7/poxizexejijumawusumokid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c4242e6-c716-4daf-a718-165ab9214ed7/1157427917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36e0cb46-05d7-497d-b14a-3b5640546715/zataxaxuraw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/0409/4358/files/73017364220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7723/1007/files/10_22_folding_stock_promag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9238/8261/files/45345195097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5654/7990/files/32025575291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1549/6092/files/70545503179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5659/8692/files/officejet_pro_x476dw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1865/8207/files/minecraft_pocket_edition_0.2_1_apk_download.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_off00008af8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF8 5324 bytes
SHA-256: e1d516356f3139b46da0edf0f92c685d843d05ba470fbdc368d978eb418837cf
font_01_sfnt_off00009d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D02 10564 bytes
SHA-256: db415d38bc721662380da625ecdfbd266d286c151431b4c06a27cfaeded9249c

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