Malicious PDF — malware analysis report

Static analysis result for SHA-256 655b2d213762e89e…

MALICIOUS

PDF

70.8 KB Created: 2021-03-02 23:48:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 19272f58c82af53cb00d28f7312a24bb SHA-1: 629892d36affee9ef8e20cbdeed89883464ef197 SHA-256: 655b2d213762e89e478314af9e363d6816615748a11d476edde02c272d6b93ec
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. The embedded URL `https://bologen.ru/award?keyword=autocad+lt+layout+tutorial` suggests a lure to trick the user into downloading a secondary file. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/award?keyword=autocad+lt+layout+tutorial PDF link annotation
    • https://cdn.sqhk.co/tategupet/Aujggg6/65597286930.pdfIn PDF document text
    • http://everydayy.fun/68747930664wmheh.pdfIn PDF document text
    • http://nivakagudan.22web.org/zodonokiza.pdfIn PDF document text
    • https://mepubigavij.weebly.com/uploads/1/3/4/5/134599646/e4ce5bad.pdfIn PDF document text
    • https://cdn.sqhk.co/dogutadova/ihciplE/reset_beats_x_bluetooth.pdfIn PDF document text
    • https://basosogufu.weebly.com/uploads/1/3/4/6/134682995/1691945.pdfIn PDF document text
    • http://shop-you.xyz/nepidatifokedebuxiixmil.pdfIn PDF document text
    • http://zefonurogize.22web.org/salegelojodaw.pdfIn PDF document text
    • https://biwomewiwuxe.weebly.com/uploads/1/3/4/1/134131409/e9a218c0d.pdfIn PDF document text
    • http://tubezadobuzaro.66ghz.com/6056293153.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/rujimidujek/rudokufisasuxesetopasuw.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/lexus_rx_350_cargo_area_dimensions.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/13465669969.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/43363686474.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/regulatory_reporting_jobs_birmingham.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/angular_formgroupname_ngfor.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/roland_barthes_death_of_the_author_analysis.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_off0000dc0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0A 4848 bytes
SHA-256: 474211f47060c333b5116c0385616621952cd1295bb5a76f1f91ea8234e0f684
font_01_sfnt_off0000ec99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC99 9884 bytes
SHA-256: 0f2d7b32668c71e1b2e44f4729b7e8d5dd8c7ebd9f2509c704f16da181a4e60c

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