Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7de167893f99f0…

MALICIOUS

PDF

68.8 KB Created: 2020-11-14 00:13:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3d0717a154350aced79a5c8b8b36fc0f SHA-1: bf157dbd62741fe085d0608f9f079bed2b087ecc SHA-256: ab7de167893f99f05ef37f82b3828edd82d576d5663a353bf0547dd0d22fabfc
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that leads to a domain associated with phishing. The document body, though heavily obfuscated, contains text related to 'Rmw 2.2g24 pump parts', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/123?utm_term=rmw+2.2g24+pump+parts PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464068/normal_5fa9e2fba221b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405687/normal_5f942077405a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368478/normal_5f888be4ba602.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479942/normal_5faf02adeb265.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371787/normal_5f9bdb73af94a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471481/normal_5fa7766eb7df8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378641/normal_5f9549ceb86e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418791/normal_5f99076dca965.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383915/normal_5faa7a6eadb72.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/poxanifudabipefij.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/werexibivibixuvenikako.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000bdde.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBDDE 15068 bytes
SHA-256: 0f7754863eeded79d3fb5359dd34a58e9d5ffac7e7c058718087198ff22b2d46
font_00_sfnt_off0000ab43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB43 5460 bytes
SHA-256: 270eaf8b35c660dfcb3487ff790dddd6eb617ebd75e6fe29f9ffa8e7537c0e44
font_02_sfnt_off0000e69f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69F 9388 bytes
SHA-256: dc6829cc2d3a7f4477a4dece67850f2d966468520a432e378c6ca1370312cc93