Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1e7792ddcc5fe9…

MALICIOUS

PDF

108.1 KB Created: 2021-05-12 23:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 7df3304c6f1f431b63a5cf0d6a02ece4 SHA-1: 270eaa7f586bb1f2480f3ac9641a5c67c2c93a36 SHA-256: 0c1e7792ddcc5fe92b122dba789d8c2a33468166e11d90e8deb6818425c0996f
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous external links, with a primary link to 'https://gimoguvi.ru/strik?utm_term=sony+trinitron+standby+light+flashing+4+times', suggesting a lure to a malicious site. The PDF's structure and embedded links are indicative of a link farm or SEO poisoning technique to attract users searching for specific technical information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gimoguvi.ru/strik?utm_term=sony+trinitron+standby+light+flashing+4+times PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4500669/normal_5ffdb5d55c775.pdfIn PDF document text
    • http://winsbig.space/xenuwizosidpq71.pdfIn PDF document text
    • http://ig-copyrighthelpcenter.com/86744623466yyvcw.pdfIn PDF document text
    • https://gidaletibom.weebly.com/uploads/1/3/4/8/134881461/73756b7f51ea0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391954/normal_5fd919d983d1d.pdfIn PDF document text
    • http://tagarubame.22web.org/quantum_physics_for_dummies_book.pdfIn PDF document text
    • https://rixijufufapug.weebly.com/uploads/1/3/4/4/134497528/2660287.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458417/normal_604ce282f15d5.pdfIn PDF document text
    • http://item-get.top/can_you_lift_a_person_with_a_forkliftl4xcu.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/waxapoz/60970589935.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/bpce_annual_report.pdfIn PDF document text
    • http://dofomexikokubeb.epizy.com/7th_grade_math_diagnostic_test.pdfIn PDF document text
    • https://85fc0914-20e3-4f1c-be8c-de7e6f89f47e.filesusr.com/ugd/a44510_587467ef832548cebbd8ec4fc56e1627.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/how_to_make_hip_hop_beats_on_fl_studio_12.pdfIn PDF document text
    • https://f0ddeb88-3549-4a27-8821-6e3dd713f165.filesusr.com/ugd/2b74da_f23dfe672f8b4f40b859986cfa15ab7d.pdf?index=trueIn PDF document text
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_be733bce129e4d79ae2a183bd70c0733.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/top_rated_deck_stain_consumer_reports.pdfIn PDF document text
    • https://adc0bc6f-2b4d-4951-bce0-9128d215fa34.filesusr.com/ugd/5ea4d5_99e33af75acc49549d2263afd31559e2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/40885843644.pdfIn PDF document text
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_15df71a0e6ad4dc59a85464f2dfc68f3.pdf?index=trueIn 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001323b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1323B 6568 bytes
SHA-256: 18f4960a52d64bc83d6c304eee4b25c9ca37eec54c0f4efd5701b5568bea1fd1
font_01_sfnt_off0001428a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1428A 5756 bytes
SHA-256: 01c1ca29c2a6a4ff7558207fb1dd57d0e69afe6cd4ac47973e879a4e16011e67
font_02_sfnt_off000155f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155F6 3204 bytes
SHA-256: 1ee264861c31dcb4ea2f236b0cdade7f1406df6349a74e193d4f2a7c1f86eb8d
font_03_sfnt_off0001631a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1631A 11712 bytes
SHA-256: 2dfccadea5b9a095c40af196c8dc6880b8ba621213709b8db7feccc0f2c68648
font_04_sfnt_off00018b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18B2B 16080 bytes
SHA-256: d7c0313d84b709fe8a6a90baca56b34c20eeda1db47cffc02c31991c89a68c0d