Malicious PDF — malware analysis report

Static analysis result for SHA-256 32adb02c7e41b9f1…

MALICIOUS

PDF

88.3 KB Created: 2021-05-23 05:25:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 36d25551048129f991ca03a88a0aaeb4 SHA-1: 2c685a4d2392755f1a20238032004f7f0aa48ca5 SHA-256: 32adb02c7e41b9f1056d3bd61062b0c29441f63b2b42ed66684ec4d53e269cc7
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF link farm'. The primary URL, 'https://seumenha.ru/strik?utm_term=balanced+scorecard+kaplan+and+norton+book', suggests a potential phishing or SEO manipulation tactic. While no scripts were explicitly extracted, the PDF structure and the heuristic firings strongly indicate malicious intent, likely to redirect users to malicious or spam content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=balanced+scorecard+kaplan+and+norton+book PDF link annotation
    • https://kurakozizuvev.weebly.com/uploads/1/3/2/6/132681999/wafusokamigule.pdfIn PDF document text
    • https://vevotudoxis.weebly.com/uploads/1/3/5/3/135313682/5624516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489415/normal_5fdc51d4dc2e5.pdfIn PDF document text
    • https://surinulijo.weebly.com/uploads/1/3/4/6/134648677/1264a6e270f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447885/normal_605b62864f171.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/vosesavuk.pdfIn PDF document text
    • https://galujamisone.weebly.com/uploads/1/3/1/8/131871568/fakiv-fapupiwamefaz-sakuk-kazaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374373/normal_5fd1d0ad84a3e.pdfIn PDF document text
    • https://watameja.weebly.com/uploads/1/3/4/7/134742406/rokap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486206/normal_5fc8ded715b39.pdfIn PDF document text
    • https://munivimisidifi.weebly.com/uploads/1/3/4/7/134772296/5769795.pdfIn PDF document text
    • https://segugunopat.weebly.com/uploads/1/3/1/3/131381921/6150497.pdfIn PDF document text
    • https://jutemutugitut.weebly.com/uploads/1/3/4/6/134617260/jigokajidapudu.pdfIn PDF document text
    • https://bubebozozuj.weebly.com/uploads/1/3/1/8/131871643/dirukeze_vumuxavapixe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491926/normal_601867ebea5cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tumuzu/vufedekuguxakeron.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/craftsman_electric_trimmer_line_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/27481898326.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/a_man_named_dave_book_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/88616602.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/league_of_legends_patch_notes_10.6_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/zosomoni.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/91967464120.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF0 5060 bytes
SHA-256: 231e299d677f005233d4f68c75fe0a471b2e3342995bbb5d7447ebd15b93e54f
font_01_sfnt_off0001211c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1211C 10724 bytes
SHA-256: 655cc06b09a457c40997fdf5c90daa405f3c7b970e90be648ec7c84c6bf459da
font_02_sfnt_off0001459c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1459C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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