Malicious PDF — malware analysis report

Static analysis result for SHA-256 17d6648ed5d5df9b…

MALICIOUS

PDF

62.7 KB Created: 2021-02-07 05:41:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 84e293143890c7d5e99918d3608498f9 SHA-1: 67e4c03100b330574d94fa6f3c2c64e9a94f23cc SHA-256: 17d6648ed5d5df9bc91c4e777809cbe29c3ea1a8c81fc63c719d0942ffd0e362
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://maypoin.ru/wb?keyword=ayurveda%20books%20pdf%20in%20oriya PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488807/normal_5ff342414a4de.pdfIn PDF document text
    • https://cdn.sqhk.co/vemetafije/gdP5vDo/freaks_soundtrack_netflix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480886/normal_5fecc5e6e7245.pdfIn PDF document text
    • https://cdn.sqhk.co/tivanosox/djfB0he/relul.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/Xijgegh/27103134059.pdfIn PDF document text
    • https://cdn.sqhk.co/mudinaxape/2Mix5Cb/tukanexedikaza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489834/normal_5fed1b3120399.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_5fdc256787762.pdfIn PDF document text
    • https://kofivenemiwelew.weebly.com/uploads/1/3/1/3/131380814/b10dc3.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/mekonulegipero/bizazuxafazaro.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/51515532495.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/lisiraweledilezop.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/80965735692.pdfIn PDF document text
    • http://palomidifigur.epizy.com/marepijefinakabava.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/sexelawojonudubivuzad.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_off0000b810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB810 5360 bytes
SHA-256: 942e845e5676e0098a0a64ed800e4877477dbe559f2f2b7727226616947c499c
font_01_sfnt_off0000ca65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA65 10476 bytes
SHA-256: f320b1c36c4658cb7e56422503e9e1a9b4dc9743770cf80e432b774bd783bca5