Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad328877f3159148…

MALICIOUS

PDF

82.1 KB Created: 2021-04-03 05:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 67a4fa8b183c0836e876faa789011f32 SHA-1: b6810fcffc7214d6c93523ed6f3ce3210521a362 SHA-256: ad328877f315914855ca868fca5411f884c9b63ea9174742bac77c610f92d2f3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/123?utm_term=android+go+rom+for+redmi+2+prime PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448346/normal_60141f50b3058.pdfIn PDF document text
    • https://wesedujixezibo.weebly.com/uploads/1/3/1/6/131606467/xabefamufazuf.pdfIn PDF document text
    • http://doucheapp.xyz/denezugasabajojuzifufogog9uffq.pdfIn PDF document text
    • https://nijumaweka.weebly.com/uploads/1/3/1/3/131379182/xinodojuv-wojofulubiwo-jitum-xewimami.pdfIn PDF document text
    • http://canlisohbetim.net/2413399613101mfy.pdfIn PDF document text
    • http://blacklaser.ru/48495485011zmok4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401703/normal_5fd6709136608.pdfIn PDF document text
    • http://opensoda.pro/polafizukarivuvaduxuvapanl91zt.pdfIn PDF document text
    • http://hookup157.site/686144202834fo4b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369764/normal_5fc9b4d496bcf.pdfIn PDF document text
    • http://igafnd.org/76467891833txrc3.pdfIn PDF document text
    • https://wikiredapitij.weebly.com/uploads/1/3/2/7/132712416/guxab-mefisimip.pdfIn PDF document text
    • http://wacc-cat.org/zetuzezotibe1fq0.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/migivewuwe/37624563576.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/sql_formatter_for_visual_studio_code.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/76644831859.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/steelers_vs_buccaneers_injury_report.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/party_invitation_template_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/nopanuxilixubeva.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/bipetowosi.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/schneider_electric_product_catalogue.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED0 5060 bytes
SHA-256: f4181110c67e6dcc9a46fb7ea596fc03e98a284806e65e5afa8a1d77796cf36b
font_01_sfnt_off0000ffff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFFF 11040 bytes
SHA-256: 7fbb404eda546a01fa8a10caee4d4983423d59f6f7ef782401e50dcb0d1782f3
font_02_sfnt_off000125f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125F0 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2

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