Malicious PDF — malware analysis report

Static analysis result for SHA-256 e76632a7e19f17d4…

MALICIOUS

PDF

107.8 KB Created: 2021-03-15 04:04:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 188f45dc5dee39a348b6f2cb4e76773b SHA-1: b9fffc015f7ab405b21974fa92cccc3a01e23e2f SHA-256: e76632a7e19f17d47443e551c1332174e474587c0de9daad22e520c6a8ac6cb2
156 Risk Score

Malware Insights

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

The PDF file contains a lure for downloading 'Super Mario 64' via a link to 'botokaw.ru'. Heuristics indicate a large number of external PDF links, suggesting a link farm or phishing attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/wix?keyword=super+mario+64+download+free PDF link annotation
    • http://interior.estate/how_to_get_grass_seeds_out_of_dogs_fur07x7i.pdfIn PDF document text
    • http://micrometerdigital.xyz/hp_officejet_7510_printhead_replacement4wv5j.pdfIn PDF document text
    • http://ompala.store/vmware_datastore_cluster_best_practicesx8uhm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383925/normal_5ff474cc156ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474723/normal_5ff6b87f4cb72.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
    • http://lulubanidoz.rf.gd/12th_class_chemistry_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/37808381223.pdfIn PDF document text
    • https://6a24fdd2-d4a5-4c4b-882b-0f3115751bcf.filesusr.com/ugd/04e6f9_e89de6c16c234a23a1ad83a52e5f0a82.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pezofut/48608944232.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/sales_contract_deposit_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/83092439110.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/wudekitarodojosipawokezu.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/xabugalamirogifesuxojebe.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/cataclysm_warlock_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/liligisererudalapul.pdfIn PDF document text
    • http://roxanotox.epizy.com/nivewe.pdfIn PDF document text
    • https://626fb5af-1d67-41cb-86ce-204163677ff0.filesusr.com/ugd/9d869b_44ab67bb6f7c49a9b9e20f4235972818.pdf?index=trueIn PDF document text
    • https://b064d0e4-88d6-4b7e-8087-8ebf790fcba6.filesusr.com/ugd/ca32a8_8d4afd8fa7574f10a628420105e3adb3.pdf?index=trueIn PDF document text
    • http://togipumenotu.epizy.com/tabom.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/40751729833.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_off00015d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D11 5248 bytes
SHA-256: 95ad1f0716bac2d3f9b4adad1a1c731a0bc07981203eabb278b3e390d03115cc
font_01_sfnt_off00016ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16ED9 10936 bytes
SHA-256: e6694e150e78f35ad26a01940767753dba53d087fa8ac671fef152ea8329416e
font_02_sfnt_off000193e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x193E5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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