Malicious PDF — malware analysis report

Static analysis result for SHA-256 48531d2dc216fd10…

MALICIOUS

PDF

74.3 KB Created: 2021-03-18 05:55:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c4713c4fec3100028db6f07327f8bb4 SHA-1: 3a4970bfd2109d15427f6fea208019456ec845fe SHA-256: 48531d2dc216fd1015c11ce063e0fd74ac273a76a3bb8d6f0b3794a21abaa703
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 trick the user into visiting a malicious site. The document body contains garbled text, suggesting it may be obfuscated or contain non-readable content.

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://botokaw.ru/123?utm_term=how+have+you+been+meaning+answer
    • https://lonojoxojiliw.weebly.com/uploads/1/3/1/4/131438577/6913e57374.pdf
    • https://sinemitivivofa.weebly.com/uploads/1/3/0/7/130740142/vevapiwibojot.pdf
    • http://pewujok.mypressonline.com/nexudaj.pdf
    • http://surupumigo.mypressonline.com/bolt_torque_chart_metric.pdf
    • https://nixifekenebuj.weebly.com/uploads/1/3/0/7/130775280/6496812.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://e301b21f-f707-426c-a094-6199d4b1a2d6.filesusr.com/ugd/f65518_8cd413a69fea4878a338985a3a46da9b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/88f5540b-e4c2-41f7-89c1-819233483ebe/73130438367.pdf
    • http://pexitiwe.epizy.com/5015962372.pdf
    • http://biwosagamivi.myartsonline.com/onaroo_teach_me_time_clock_manual.pdf
    • https://s3.amazonaws.com/mejigavukolu/70986945229.pdf
    • https://uploads.strikinglycdn.com/files/e21544d1-ad0d-4ee0-b259-2a2d25076874/5231781154.pdf
    • https://s3.amazonaws.com/daniwodug/worunamaf.pdf
    • https://s3.amazonaws.com/vatosolikijike/do_inklings_eat_squid.pdf
    • https://uploads.strikinglycdn.com/files/ab253ee7-d999-451b-81d3-4ea9e2cc1a52/gelurigitogikojomikegofu.pdf
    • http://tofozoriwo.rf.gd/members_mark_grill_review.pdf
    • https://05282879-aed3-4f16-ac14-d534add4d4bd.filesusr.com/ugd/0f8b7c_0ebb1f3d2a684baab792d8ed1c0c8cb3.pdf?index=true
    • http://bowegasobufur.myartsonline.com/41656384878.pdf
    • https://96daf755-36ed-4ece-a185-bed8db3f70ea.filesusr.com/ugd/a95cda_d958856748524d8fb40d4428b99a25d5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/5dcfdd3e-6886-45e2-a771-9b51bcb07ad3/kofelenikanemu.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e420.bin
acd423e692bb498550622eaec1f73eff37e9c762444630d3095328c7d8125beb
pdf-font-stream PDF embedded font (sfnt) at offset 0xE420 5424 bytes
font_01_sfnt_off0000f685.bin
0eb9b1757a8c8acdb2df8c9dce0f6236f839775c84aad3d35facd83f06a8c2f4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF685 11324 bytes