Malicious PDF — malware analysis report

Static analysis result for SHA-256 47df0895a5c9e4d3…

MALICIOUS

PDF

69.9 KB Created: 2021-02-22 02:10:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 87121fb36c4ba2bc30e57ee0eb3242c3 SHA-1: b84124fd518115817a4685aa90393da22b8da2b3 SHA-256: 47df0895a5c9e4d380fdfe247430442d670683bc9d1f5f4f29d94e7ad8b26b71
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/wix?keyword=autozone+repair+manuals PDF link annotation
    • https://daxajofu.weebly.com/uploads/1/3/0/7/130740026/ecd4d06.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476756/normal_6003ea5992be2.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/YyjhMHE/sewofezixe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392656/normal_602107e02dd9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464541/normal_5ffa3f0e04582.pdfIn PDF document text
    • https://jorobeperepi.weebly.com/uploads/1/3/1/8/131856290/9358947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382619/normal_5fd141aae1449.pdfIn PDF document text
    • https://mibarepazakeme.weebly.com/uploads/1/3/4/6/134685426/4958553.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468294/normal_6029250928748.pdfIn PDF document text
    • https://kusuxifitumaka.weebly.com/uploads/1/3/4/5/134593182/1265f3ec422d1.pdfIn PDF document text
    • https://tutusilubejisev.weebly.com/uploads/1/3/4/5/134599447/a98c4.pdfIn PDF document text
    • https://cdn.sqhk.co/gukokefa/ijhhhvc/dekogekugo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jinabom/binomial_distribution_and_normal_distribution.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/mlb_at_bat_premium_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/dajatemiridibuletebeva.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/vufagenuzufixum.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/91924573450.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_off0000d4d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D5 5004 bytes
SHA-256: 4d0c10f82d7e581ee62aa26a0349c353ed645729c2672d984b39a3442bb654fd
font_01_sfnt_off0000e5c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C4 10932 bytes
SHA-256: 116ca3fcc82c24af826797331fb0f1f39120823206b5063b420658a459125610

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