Malicious PDF — malware analysis report

Static analysis result for SHA-256 0251e31f83a07538…

MALICIOUS

PDF

76.2 KB Created: 2021-03-03 23:47:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d3071dfe1ebf146064e39aeddc0eaa62 SHA-1: 5148effedd24a7cd90c8319364c01e2d82fe0ac8 SHA-256: 0251e31f83a07538b1d529b1ff3042ca71cf7ce1ff88aa7d198da5b752d81898
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious domain, masquerading as a search result. ClamAV and ML classifiers strongly indicate maliciousness, consistent with a phishing or credential harvesting attempt. The presence of multiple embedded URLs suggests a broad campaign to direct users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/aws?utm_term=how+do+i+manually+unlock+my+whirlpool+oven+door PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450864/normal_5fd95a7b0f7ca.pdfIn PDF document text
    • https://toxutumopomepe.weebly.com/uploads/1/3/5/3/135327812/tuvifaza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468270/normal_6038f7554f0b1.pdfIn PDF document text
    • http://rarubife.mygamesonline.org/cellular_respiration_yeast_fermentation_lab_answers_mcgraw_hill.pdfIn PDF document text
    • https://cdn.sqhk.co/voravaxa/ihfQJgh/xilelumerumez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_603c44df16872.pdfIn PDF document text
    • https://cdn.sqhk.co/jigekuragige/10Lij2i/injustice_gods_among_us_comic_volume_1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417406/normal_5fe182e42983d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369935/normal_60391903ec779.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501198/normal_5ff3f881dda04.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443595/normal_5ffb1451f0e03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380413/normal_5ff4c5436b788.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412394/normal_5fed4f992e55b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420260/normal_60260ad256ad2.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/kopisigapub/bazaar_south_movie_720p.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED14 5416 bytes
SHA-256: 4f94578a5e3de87aeb77b5eba7b5228c8dcc2bfd3e29dfe9ca2ade216f9b0b6e
font_01_sfnt_off0000ff68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF68 10468 bytes
SHA-256: 7271ec30bba49a1b68fea5a28bd9af629b062dc21e50721e8127d637d68a5f02

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