Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e00a687cd891c2…

MALICIOUS

PDF

64.9 KB Created: 2021-02-14 16:40:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 26e694d2eff2a44c41103302fd8879e0 SHA-1: 1e4994117739be9a1c7a6c86b52cb528dc9fe633 SHA-256: 71e00a687cd891c2607c7e7a5402f889fe205ff1e5af40b7bd09eb030f08b6c6
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://baarspo.ru/wix?keyword=big+joe+milano+bean+bag+chair+cover PDF link annotation
    • https://gexokatex.weebly.com/uploads/1/3/5/9/135960098/denexekomib.pdfIn PDF document text
    • https://nonaxoboru.weebly.com/uploads/1/3/4/4/134467623/mutip_mijob_nivaxaserejoxi_solag.pdfIn PDF document text
    • http://rubisteq.online/fizar4fzii.pdfIn PDF document text
    • http://stal-kemerovo.ru/lucky_life_8_reviews29jhr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445749/normal_5ff3d07be0074.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480403/normal_601b4e590bfe4.pdfIn PDF document text
    • http://salebox.shop/asterisk_cdr_reports_free748e0.pdfIn PDF document text
    • https://tovijivesigaz.weebly.com/uploads/1/3/5/3/135327805/9527657.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426972/normal_5fef1b00341d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503617/normal_5ffc3a10bdb70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454671/normal_5ffe69500c612.pdfIn PDF document text
    • http://marketitaly.info/61361828903dn9sw.pdfIn PDF document text
    • https://vebavorosufate.weebly.com/uploads/1/3/4/7/134742301/7efcc83f4138.pdfIn PDF document text
    • https://makirogu.weebly.com/uploads/1/3/0/9/130969002/suzijul.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/vefagotoje/printable_number_line_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/panovamalezegikepef.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/86174414756.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/xenapotidonagov.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/71196409474.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/viber_backup_android_to_iphone.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_off0000c122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC122 5360 bytes
SHA-256: 5c2b722c2692ba4f39a60f612f03408e6f5124a77ffb7bdd64bf2bafb6cc57e1
font_01_sfnt_off0000d346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD346 10324 bytes
SHA-256: 00b38bbd2403b2c979c735ed916792b12a9d3a143f4faeee46a06ad5f4981978