Malicious PDF — malware analysis report

Static analysis result for SHA-256 994e0b7d95ba6e89…

MALICIOUS

PDF

76.9 KB Created: 2021-02-24 00:00:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a5c9ad8a97efc0b61d7ec2ae44180220 SHA-1: ad1be2ef4105e989b271ade5c03b765a30c69c70 SHA-256: 994e0b7d95ba6e898b52d51e7ce901415f635c86f040dcc05aa9bfda7a95197d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, appears to contain text related to water heater maintenance, likely serving as a lure to encourage clicks on the malicious URL.

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://druttle.ru/strik?utm_term=how+often+to+replace+anode+rod+in+water+heater PDF link annotation
    • https://cdn.sqhk.co/guvawatuzax/UXShe9W/66773406228.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487431/normal_602e3d43eecc6.pdfIn PDF document text
    • https://cdn.sqhk.co/rotogogoji/0gcmiin/sivojiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405413/normal_5feb40fadbf8e.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/rjigMhc/pagikimopokuwetopo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471474/normal_5fc650b24a2ca.pdfIn PDF document text
    • https://cdn.sqhk.co/vujixete/iiiaEif/57340502251.pdfIn PDF document text
    • https://cdn.sqhk.co/sugutomipu/hjschbD/las_vegas_athletic_club_lake_mead_and_rainbow.pdfIn PDF document text
    • https://cdn.sqhk.co/jufenakajo/Z0hdwge/mit_app_inventor_tutorial_arduino.pdfIn PDF document text
    • https://cdn.sqhk.co/naveropifo/emtKuie/roseart_lightastic_3d_neon_glow_spin_art.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/alphabet_practice_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/1694668735.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/ramedunarodusiretemuv.pdfIn PDF document text
    • http://fasokefukolu.epizy.com/bangla_movie_2018_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/60589571125.pdfIn PDF document text
    • http://nibinelageniwir.epizy.com/kabogumigatufowatisopem.pdfIn PDF document text
    • http://famuruvif.epizy.com/zafigipudoka.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/402163868.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e03d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03D 5116 bytes
SHA-256: 25e204c943afcfee9b3da0bb581be065bf49d2ac14fc910f25840268b060720e
font_01_sfnt_off0000f1a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A3 6148 bytes
SHA-256: 4910d0177da9f60ecc92c13a34fae8c5c38ffafb9e4e22a3c3fd987548b79157
font_02_sfnt_off00010184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10184 10600 bytes
SHA-256: d4e5dacce30f5b6f2722bfed9c82c56fcaad783bdfeed19ff8b239c3f47e042e

Open this report in the interactive analyzer, or submit your own file for analysis.