Malicious PDF — malware analysis report

Static analysis result for SHA-256 72703814c2d6d31b…

MALICIOUS

PDF

45.2 KB Created: 2020-10-09 18:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b695c56c538ed1e89a481bb1a069b5ce SHA-1: 6bff1ba5cdbf314f4d913af788c9958570d2e5ff SHA-256: 72703814c2d6d31b0810facdd474ceedfe9a551a7dd8432b588a4c9f31733273
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=addressing+an+envelope+worksheet+pdf In PDF document text
    • http://files.amagier.com/uploads/1/3/0/8/130814283/fizogedivag.pdfIn PDF document text
    • http://files.jwdesanctis.com/uploads/1/3/1/6/131637308/sasetelodurulo-gikexizi-bupuvonup.pdfIn PDF document text
    • http://bepaj.adskope.ca/uploads/1/3/1/1/131164394/tabozigeto.pdfIn PDF document text
    • http://files.scottstreamingtech.com/uploads/1/3/0/7/130739155/tozumok.pdfIn PDF document text
    • http://files.thekansasbeecompany.com/uploads/1/3/1/3/131384145/wozudelamor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6792a7c9-768a-45e8-b78c-35b41797f339/45509415227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ef5d640-eae9-4983-924d-c6c4888bbb34/98866114416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dd93489-0d18-4445-8fcf-813b3531d489/94779827265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a325230-9967-426c-8f60-5372441d5c81/dewiwefalufitowasafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86b84a99-ca3b-45b8-8b89-18ba77e630c1/63103693524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0921095-42b6-4d12-b30c-4e505ce7791b/67294594211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/082e6574-4f96-454e-bc5e-7107fbedb0b5/98024015740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6816/1184/files/tijusum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3657/6414/files/glock_23_gen_3_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2675/0359/files/pukixonekigep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7649/files/mexoju.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6492 5296 bytes
SHA-256: 63bf3934c598e00024011ccd95a486dba4eb257643c51cd2d68c530d5280f867
font_01_sfnt_off0000769f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x769F 10212 bytes
SHA-256: 51d9a45182a6bb63c7d089fd59571d4e61274529febf0c4fc8a417facef9f266
font_02_sfnt_off00009983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9983 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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