Malicious PDF — malware analysis report

Static analysis result for SHA-256 93dd75b8277f1e88…

MALICIOUS

PDF

76.4 KB Created: 2021-04-07 09:41:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c7908da06639ce80c23feaa0ba97b878 SHA-1: 59241be9bbbd7c122b884c1eb9a376b6b8354caf SHA-256: 93dd75b8277f1e88e671993558b3ee3609e32c812d7f0bcfddc7752b20f852b4
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 0.9998

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://lozipotod.ru/wix?keyword=tower+conquest+cheats+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414678/normal_5ff9efc087512.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459625/normal_5fdf9f738f78b.pdfIn PDF document text
    • http://help-copyrightviolationhelpcenter.com/como_limpar_tinta_de_impressora_da_pelenpzb9.pdfIn PDF document text
    • http://astropsychology.website/how_to_get_rid_of_vinegar_smell_on_feetcymuo.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/suxuzubojut/rawasosodivoxuset.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/d_d_races_and_classes_guide.pdfIn PDF document text
    • https://7095e710-59ac-4d27-8a5a-f3bbcaf65deb.filesusr.com/ugd/418e76_09d19618f1554e64ad7a4701eaf22631.pdf?index=trueIn PDF document text
    • https://47c0d0ed-94e3-447f-940a-e265262d053f.filesusr.com/ugd/a43ec6_fe94beb986db4c9684ad4bee0a1a6cd2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca99e18a-12ec-45c6-ad9b-74c3bcc46bd0/jozolakabiguzazapiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/malayalam_kambi_kathakal_aniyathi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/273301dc-2666-4a0a-af6f-e1e689a50ef6/16377606674.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/curriculum_vitae_consultant_template.pdfIn PDF document text
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_ae20e85c09fb4f33a48565a111eb313c.pdf?index=trueIn PDF document text
    • https://95e354e6-8561-4e52-807b-deb85f3b5fdd.filesusr.com/ugd/ca9b0a_be3f6ac8a73848a2aabada5ec9311d46.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/045c3a1d-d482-4e0e-b673-d12d1a635ed6/how_to_become_cpr_aed_certified.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/holy_rosary_wednesday_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e955315-3223-44ce-8ce5-71721874215c/standard_catalog_of_world_coins_1801_a_1900.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_off0000e0c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C0 5028 bytes
SHA-256: 79d2de26fe319907d4e7154c645d80a0ffd0d2d5927dbb3ae04baf259e0f156e
font_01_sfnt_off0000f1da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DA 10760 bytes
SHA-256: 86ea7ca81d6ed758333100f575c678b70cc2468168fc38b79317bef461784b52
font_02_sfnt_off000116b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B8 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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