Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ae106c7d12d30c…

MALICIOUS

PDF

73.3 KB Created: 2021-09-12 06:26:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: f1cbe519c06d259393904d2623e081f8 SHA-1: f843f84827fc6eaaf7ddb81d38af8e9d80acb0c5 SHA-256: 07ae106c7d12d30ca8956cdf3485325ff03545d1f041cf436275a97f08f69815
134 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript, identified by the PDF_JAVASCRIPT heuristic, which is a common technique for redirecting users to malicious sites. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics strongly indicate malicious intent. The numerous extracted URLs, many of which are hosted on disposable domains and appear to be part of a link farm, further support the phishing or credential harvesting attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 6

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crysiq.ru/uplcv?utm_term=white+house+down+online+free PDF link annotation
    • http://appartenvue.net/appart/upload/images/41309219316.pdfIn PDF document text
    • http://herningbadintra.dk/app/webroot/upload/files/jifezafokot.pdfIn PDF document text
    • https://tranthachcaodanang.com/uploads/image/files/weripusifipoj.pdfIn PDF document text
    • http://freeorden.com/media/file/mamesudodezedirajaw.pdfIn PDF document text
    • https://pmsp-me.com/userfiles/files/misokojevunubodatugivid.pdfIn PDF document text
    • http://neodentpetrosino.it/userfiles/files/digoniwow.pdfIn PDF document text
    • http://agierresrl.it/userfiles/files/82584984317.pdfIn PDF document text
    • http://hbaoge.com/upload/files/mudakap.pdfIn PDF document text
    • https://paymentor.nl/uploads/file/rakimupudiwapujapupuka.pdfIn PDF document text
    • http://soles2walk.com/data/file/75271366613.pdfIn PDF document text
    • http://noithatphathuy.com/Images_upload/files/junobarubazufenix.pdfIn PDF document text
    • http://fundacjaproartis.pl/javascript/ckfinder/userfiles/files/91314988403.pdfIn PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/kagizoxorosikuriw.pdfIn PDF document text
    • https://psychotherapie-coeppicus.ch/userfiles/files/82949859722.pdfIn PDF document text
    • http://memsports.com.br/admin/libs/ckeditor/ckfinder/files/14197573425.pdfIn PDF document text
    • http://market-oborudovanie.ru/upload/file/61054656393.pdfIn PDF document text
    • http://tjjjsh.com/uploads/files/vemani.pdfIn PDF document text
    • http://easyliveconstruction.com/ci/userfiles/files/nunarexowakotana.pdfIn PDF document text
    • http://coomargroup.com/ckfinder/userfiles/files/munijivoxokesuluri.pdfIn PDF document text
    • http://puzynowska-kancelaria.com/userfiles/file/17984513347.pdfIn PDF document text
    • http://www.herbertvanderbrugghen.nl/draft/togenimajowe.pdfIn PDF document text
    • http://manpukulivermore.com/uploads/files/43558724777.pdfIn PDF document text
    • https://rdsdealers.com/ckfinder/userfiles/files/39539464654.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://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_off0000bb8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB8C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d3a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A3 10468 bytes
SHA-256: 70a2be61a8711cee79afee981ab63ba110c43b63ea04bbd7d2ddab11ce881212
font_02_sfnt_off0000eb62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB62 17148 bytes
SHA-256: 4f29c1258f40c09dadba1026d92299961ff8ab9c6102d6a1c51dc219d1a7ba74

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