Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e02e738c0d98b65…

MALICIOUS

PDF

78.2 KB Created: 2021-05-22 04:17:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: a047009748d1196995c145cdaf543c66 SHA-1: 7c679fa68b6e8d8df8ffe709522bb947fac5c3b3 SHA-256: 7e02e738c0d98b65fd6c92fc8325e9a4c67939ff0b46394f59dc86f5f7476667
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Weebly and other hosting services, indicative of a link farm or SEO spam operation. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text related to accounting examples, which serves as a lure to encourage users to click the embedded links.

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://xajibur.ru/strik?utm_term=genel+muhasebe+monografi+%25C3%25B6rnekleri PDF link annotation
    • https://kewesolatuveg.weebly.com/uploads/1/3/1/4/131452958/muxuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501656/normal_6058eced8c9df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470220/normal_602efc4349a96.pdfIn PDF document text
    • https://muxiduxipa.weebly.com/uploads/1/3/5/3/135319221/nilivejixurazopomo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469370/normal_603320be603b2.pdfIn PDF document text
    • https://zozabamefopofa.weebly.com/uploads/1/3/4/2/134234868/xanugexor-varel-jikoki.pdfIn PDF document text
    • https://vatanivirasuta.weebly.com/uploads/1/3/5/3/135387760/buruki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368235/normal_5fc9027a44f0a.pdfIn PDF document text
    • https://winojarenegesut.weebly.com/uploads/1/3/4/4/134481716/a67738d7dee3e.pdfIn PDF document text
    • https://xijanejomasug.weebly.com/uploads/1/3/4/5/134506458/mexijipenewodi.pdfIn PDF document text
    • https://guzajemifuraruv.weebly.com/uploads/1/3/0/8/130874286/nijawilamekoguk.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/fejenijovekozu/how_was_the_great_society_revolutionary.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/traffic_report_dereham_road_norwich.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/faxulusekodoxej.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/kopuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/xilipuliwikunezilejo.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/guluwatazixuj.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/dikexasovevu.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/suncast_hose_reel_cart_175-ft.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/55317747429.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/burlesque_performances_new_orleans.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_off0000db5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5A 5552 bytes
SHA-256: 01e8b3951d16f057dfbcd3e23836d9d36c49d2199ecc496595809facb14fb8fd
font_01_sfnt_off0000edd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD5 12440 bytes
SHA-256: b726edf62a4bb348171b4318b4030328b273cf799d49010fe57b3472e8a4c113
font_02_sfnt_off000113f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113F4 16140 bytes
SHA-256: 6b08f8481c6c57ebf8f14ebfc3cac4dd00d3a39203628dd640d3b2d2ca935c04

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