Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a433a4d65088587…

MALICIOUS

PDF

90.5 KB Created: 2021-02-17 17:18:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 3000cc8f2498c3a03027f54c5769393f SHA-1: e7926d6d56cfdff1145dc9b449beb25dd190196f SHA-256: 8a433a4d650885876f9a33420d2b049df572de2766a3cecf0204dd9bbad70ea3
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a religious mantra, aiming to trick users into visiting the malicious URL. ClamAV and ML classifiers also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://baarspo.ru/aws?utm_term=lakshmi+ganapathi+moola+mantra+in+telugu+pdf PDF link annotation
    • http://mixed-rootwork.com/552817054206r4us.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505837/normal_6029e3f988a90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444875/normal_5fe252a939d01.pdfIn PDF document text
    • http://tisibodonal.22web.org/vekubalitadip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://sivadanoxibive.epizy.com/live_at_festival_2018.pdfIn PDF document text
    • http://wamodaf.epizy.com/air_raid_siren_sounds_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/duvodar.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/75233526117.pdfIn PDF document text
    • http://tabumuxiwuno.rf.gd/37563827994.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/45302965475.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/4489361174.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE12 5460 bytes
SHA-256: 2a72460b3c07ba69eae5f78fcea65610a341fda509fa7544cd63d737703fed33
font_01_sfnt_off0000f07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07E 3772 bytes
SHA-256: 0a4742a7d30518e93b516112d6a49ac15dea1c2fdd3760b08880524b17fca9ea
font_02_sfnt_off0000fc21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC21 3692 bytes
SHA-256: 11ccd04b3f6464008565b76d750c9082d23ba4faf1b13c9b4527be488036744b
font_03_sfnt_off00010acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACD 10092 bytes
SHA-256: ec6b6551e496efaf2fdcc9248d75248b7b9b4ea66b338224436893ee0e9869e6
font_04_sfnt_off00012da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DA9 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
font_05_sfnt_off000142fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142FC 7532 bytes
SHA-256: 5c100f7002f85698d57816d80d757d36bf7c92896f2a59eaeeff022e62ffe369

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