Malicious PDF — malware analysis report

Static analysis result for SHA-256 3440cc9dab2eb5c4…

MALICIOUS

PDF

76.2 KB Created: 2021-02-12 07:57:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 68ae47ee3019c98a9808c46460a46e5d SHA-1: 07d2d38ba477dc080f8e338f36565dbc3549c88d SHA-256: 3440cc9dab2eb5c4a401c8f08e4770ee6f1d2c012537364a89600749cfc881ee
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host or redirect to a malicious payload. The document body, though heavily obfuscated, suggests a lure related to 'feature type leading', aiming to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=what+is+a+feature+type+leading PDF link annotation
    • https://cdn.sqhk.co/xutazazo/hjZgdMJ/evan-_amos_on_wikimedia_commons_public_domain.pdfIn PDF document text
    • http://cabinetsop.xyz/93180578893qrur8.pdfIn PDF document text
    • http://cpskras.website/tanefuxego35srt.pdfIn PDF document text
    • https://cdn.sqhk.co/pipidopowewe/iehdiiF/top_10_selling_singles_of_the_70s.pdfIn PDF document text
    • https://cdn.sqhk.co/sezelijimofi/qpWgh0F/mars_mars_compatibility.pdfIn PDF document text
    • https://cdn.sqhk.co/mupalewefe/ZZzUhcu/roblox_yba_steel_ball_item.pdfIn PDF document text
    • http://genusadnlo.space/16577342821nkkk5.pdfIn PDF document text
    • http://supfitket.buzz/91354333004tr4k5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412895/normal_5ff5f30c84702.pdfIn PDF document text
    • https://cdn.sqhk.co/gunakawujo/Ugf8kBA/gazozixodezoziroxorumiwux.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/didfjdU/w3schools_css_border-_box.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/jedaxopopuko/2017_o_l_maths_paper_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/hollywood_movies_hdpopcorns.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/blank_snapback_hat_template_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/tupawokeduruvevexun.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/mokedevafitodozux.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/annual_report_examples_nonprofit.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/55965437709.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_off0000ebf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF1 5420 bytes
SHA-256: 8903dd4a1b2543d3a06d1221155c2352749a0ab20a00be2c74e392d7d423bc4a
font_01_sfnt_off0000fe6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6E 11108 bytes
SHA-256: 7358c1739fcf7367e08dd20da4101f1365fd342b5add2177c0d043f5751fd24c

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