Malicious PDF — malware analysis report

Static analysis result for SHA-256 8003a683e5abbe7c…

MALICIOUS

PDF

75.3 KB Created: 2021-01-16 09:40:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 38e79bb14c14b4f0cc58b5677cb3aba4 SHA-1: 7daa082d68062873990ed5f856e8d1607c14eb35 SHA-256: 8003a683e5abbe7cfb1a04a08548a47de5a3c10402063579280a7a4d9aa3b528
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, traffnew.ru, which is likely intended to host a malicious payload or redirect to a phishing site. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to exploit the user or download further malicious content.

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://traffnew.ru/123?utm_term=mercies+wordpress+pisorn+darjanuddin PDF link annotation
    • https://cdn.sqhk.co/furafurume/hiv5jjc/zombie_castaways_secret_island_wells.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384472/normal_5fdc6d07de8c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469104/normal_5fc8e14f313ee.pdfIn PDF document text
    • https://cdn.sqhk.co/gegefemorosu/hiYRetQ/fitaresutipuxavage.pdfIn PDF document text
    • https://vekeliludodim.weebly.com/uploads/1/3/4/7/134745250/xazavanumunan-musamepunugilux-febozow-dilotadud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bezorito/entrance_exam_for_grade_1_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/17760350119.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/29331646517.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/treasure_island_novel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/sozalawaxusowunuwazitopev.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/54374136005.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36F 5208 bytes
SHA-256: 1bb84a3ef9630e656ad3b03900399cadeb358ecafd60dbb6d13aeb2d7bbfb10d
font_01_sfnt_off0000e553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE553 11000 bytes
SHA-256: 6bdbc35f54c10fa368442a902af81a079bdb1aeede3971f4694c97f20c56acd0
font_02_sfnt_off00010afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFA 16144 bytes
SHA-256: f316be14b6fc2a26b33f765ac643442b1ca2252d057d18992df21a386fb999b0

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