Malicious PDF — malware analysis report

Static analysis result for SHA-256 273ec2c2460045c3…

MALICIOUS

PDF

84.5 KB Created: 2020-12-20 11:58:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 61b4194ca43c02e6602177f1d88dbec1 SHA-1: d76ad92c0812010413791110b7a246d7d76233ca SHA-256: 273ec2c2460045c384acc7457d0aceb98d3fc0db5030b94269ddbc838c170992
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for a phishing or malware distribution campaign. Although no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://trafftec.ru/aws?utm_term=install+android+sdk+using+command+line PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4489977/normal_5fdd3201ae46e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416299/normal_5fb2d2ea09452.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369152/normal_5fc835d7e7e7c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2ffe5998-aca4-4b49-bc62-2b5caf152f02/angles_parallel_lines.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/drive_conference_2020_andy_stanley.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f88bd26ff1194f740ef3/t/5fc679cf08845d09246ae002/1606842832447/telecharger_application_orange_money_senegal.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/12490013979.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/bulara.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/72187689503.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd46f08715ea0dc9cdbd2a/t/5fde7d0515a11837d0a77c1b/1608416518989/zemavof.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/jilixaruranagume.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/21406567865.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/revista_capital_humano.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn 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_off0000ca23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA23 6588 bytes
SHA-256: fa72874b8c381873b432d3b5cea9ecddba20f04e8e1c9face7d560df1136061a
font_01_sfnt_off0000da9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9D 5144 bytes
SHA-256: 88e3cf5d0fdbe041747db990885c3e08f1a6a231dc17e379d06dca72062a245a
font_02_sfnt_off0000ebed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBED 5600 bytes
SHA-256: af0154cd2a322d8d82c0b4b905e49f9f3c036e662eb9b20313c6b725aad31fef
font_03_sfnt_off0000fd0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD0B 10284 bytes
SHA-256: b70533ed6cd355d2e10f76f6921442b84278cc4f12eea86ef1b8179ff1b89aa2
font_04_sfnt_off00012059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12059 16188 bytes
SHA-256: 55efd0b51410ecbc320efe148a6c104c7c4a4033e3ba2ea0387787b4025a6765
font_05_sfnt_off00013595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13595 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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