Malicious PDF — malware analysis report

Static analysis result for SHA-256 065632ac523bd79f…

MALICIOUS

PDF

53.9 KB Created: 2020-10-23 17:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 3bd337a484bccf2f1fcda9b24eff830e SHA-1: 8d13f765e38570b50a79d2645a06426167132820 SHA-256: 065632ac523bd79f7dba748caf8bd303d31475344ca7323bf543117053046954
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=les+alcanes+exercices+corrig%2525C3%2525A9s In PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/e7dca301.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/c99b17d4c6b898.pdfIn PDF document text
    • https://sizukejagu.weebly.com/uploads/1/3/2/6/132681884/zuzunegufobir.pdfIn PDF document text
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/vexug.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/togiluxafik-kipesegeluwedas-juwisoxoweruzi.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/e112a88c.pdfIn PDF document text
    • https://gekeforoka.weebly.com/uploads/1/3/1/4/131438206/gimodutip.pdfIn PDF document text
    • https://wimolakerozer.weebly.com/uploads/1/3/4/4/134448160/xokavezotes-nopoloduxajida-gazokokekebep-ninotubi.pdfIn PDF document text
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/purigixajelupigeru.pdfIn PDF document text
    • https://tenagudewujuga.weebly.com/uploads/1/3/1/1/131164273/d707d788a78.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00009139.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00009139.bin)
    • https://cdn.shopify.com/s/files/1/0485/6794/3328/files/17198427839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1497/4358/files/idm_crack_key_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0878/9150/files/lenovo_yoga_260_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/teoria_centro_periferia.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/rewugewesuzutelatufipero.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/24828830023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/24590265891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3986/2183/files/10771116365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0184/6181/files/37179504057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5621/files/74398802904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8363/5619/files/58372091533.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 extracted file (font_00_sfnt_off00009139.bin)

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_off00009139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9139 5120 bytes
SHA-256: 001a10cc0ad0ecdb25e7fbdd08876099036e0aa71cbe76599d9851f0b54f6286
font_01_sfnt_off0000a276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA276 11988 bytes
SHA-256: 488e9eae75c54667e0238325871ed1ed2beaad944bf454dc2bf8ecdfba2767e3

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