Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c2c3f316720b0a2…

MALICIOUS

PDF

80.8 KB Created: 2021-03-19 11:08:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 162a730d697b9925236e7f80dfecdd52 SHA-1: a20336bb6a007729f1dc531b7fe35f8a1e3f1fef SHA-256: 7c2c3f316720b0a2f4417f6395ba458bbcd017464e50981d875a09c7c48b5b0f
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that leads to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to 'Christmas carol songs pdf'. The presence of an external URI points towards a phishing or malware distribution attempt.

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://xezojetit.ru/123?utm_term=christmas+carol+songs+pdf
    • https://cdn.sqhk.co/mezutorixo/kFIsicj/66589469532.pdf
    • https://nujirami.weebly.com/uploads/1/3/1/3/131384028/wokolefovikat.pdf
    • http://goxepuwusor.22web.org/concerning_hobbits_partitura_piano.pdf
    • https://wuxelulomevadi.weebly.com/uploads/1/3/4/9/134904547/fewivekixi.pdf
    • https://genepuxomo.weebly.com/uploads/1/3/6/0/136053587/67a15.pdf
    • http://wavulefarunatev.iblogger.org/veruti.pdf
    • https://cdn.sqhk.co/voromerubagu/ihgyhaD/sapuvitis.pdf
    • https://cdn.sqhk.co/dosojegomugu/NAggjiW/64595739243.pdf
    • https://taboxalitipema.weebly.com/uploads/1/3/4/5/134581752/86452c.pdf
    • https://cdn.sqhk.co/nixivezez/fpgjfjh/scary_doll_fake_call_joke_download.pdf
    • https://cdn.sqhk.co/bulelovuroga/KLjgicZ/dumodit.pdf
    • https://cdn.sqhk.co/zepipawetopi/jekpjhc/jopejib.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/26018d5b-3d9b-4215-b0fb-baf2b7510f50/international_business_degree_salary_per_hour.pdf
    • https://uploads.strikinglycdn.com/files/d3ec575a-bd42-4749-92b0-32dc593fb01e/94705420210.pdf
    • http://kiguwodakoz.rf.gd/xebupalotilum.pdf
    • http://jetumodegupejit.rf.gd/miss_earth_2018_winning_answer.pdf
    • http://wulekugigewipo.epizy.com/numulelune.pdf
    • http://vizawog.epizy.com/84830456419.pdf
    • https://uploads.strikinglycdn.com/files/6bec6517-63b6-4f9d-a781-851ebab98345/divine_mercy_image_free_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7a3.bin
88a61a156fe64e4782b193aa2bceab8a6e6d9d1d71c763d7add3fee5765a659e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A3 5476 bytes
font_01_sfnt_off0000fa0d.bin
4ab1f026511782600d4c0c3ebe8daf96238b537013642e6a1bc63a81f895025f
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0D 10520 bytes
font_02_sfnt_off00011e41.bin
b2563e85233037e3c2780690ed1455257f868516b5a962e54e6ffe29314c9cb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E41 16312 bytes