Malicious PDF — malware analysis report

Static analysis result for SHA-256 65e31f39814b868a…

MALICIOUS

PDF

68.0 KB Created: 2021-02-19 02:52:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eace1e11fd00d78fd833c96dd3b08854 SHA-1: e5227f533f6cd12713361af7b4a9673db95ee794 SHA-256: 65e31f39814b868a257ad713d9eb6250bd67a077c0648a4d72322b6ce57559f7
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://jottigo.ru/wix?keyword=8p2+force+and+motion+unit+study+guide+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4491437/normal_600dc8344a137.pdfIn PDF document text
    • http://liseravuziw.22web.org/panelview_1000_plus_software.pdfIn PDF document text
    • https://dunexagog.weebly.com/uploads/1/3/5/3/135303431/5b2787.pdfIn PDF document text
    • https://dugaposiga.weebly.com/uploads/1/3/4/8/134857723/firozinev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367947/normal_5ff312d7d6248.pdfIn PDF document text
    • https://cdn.sqhk.co/beledufe/sjjnjhc/19380178555.pdfIn PDF document text
    • https://cdn.sqhk.co/bisegepamitu/jwjcNZn/joketagogutigijukubozip.pdfIn PDF document text
    • https://wepusetu.weebly.com/uploads/1/3/2/6/132695333/kikawodixedonozitewo.pdfIn PDF document text
    • https://jagotizepevex.weebly.com/uploads/1/3/4/4/134464701/94a330.pdfIn PDF document text
    • https://cdn.sqhk.co/zudoputasafe/cruhfja/61821591747.pdfIn PDF document text
    • http://accueilcmb.com/podisikibawaf7yciw.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/sevoga/did_i_ever_tell_you_how_lucky_you_are_book.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/61157617450.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/geometric_patterns_math_worksheets.pdfIn PDF document text
    • http://pimubejat.epizy.com/calculator_win_10.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/c_difficile_treatment_nice_guidelines.pdfIn PDF document text
    • http://livasesokod.epizy.com/corrugated_roof_sheet_specifications.pdfIn PDF document text
    • http://rupokabimizoju.rf.gd/5808436351.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_off0000cf23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF23 5868 bytes
SHA-256: 4a2854603aee8ffad7c328b4d607180a7a0868d5276cec93c8666a5be74bf160
font_01_sfnt_off0000e321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE321 9264 bytes
SHA-256: 331a1ddc9b6e08b4803333759ccfef1225ac72ec56eaa8379b13d2be39bdd0c6

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