Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c97a99086aa116…

MALICIOUS

PDF

91.8 KB Created: 2021-03-18 19:26:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f6a9f036460e8693f02e706df6ae06fa SHA-1: 0b893113d050a443872c82228e16060637cdf5cd SHA-256: 57c97a99086aa1162437d5b98568a83d50e3c822baf7086f08bd9c3b979dd6a7
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with one pointing to a suspicious domain ('lozipotod.ru') that is likely part of a phishing or malware distribution campaign. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to generate traffic or distribute content. Although no scripts were explicitly extracted, the PDF structure and the presence of external links are indicative of malicious intent, possibly involving JavaScript execution to redirect the user or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=north+lakes+golf+course PDF link annotation
    • http://perexifolelave.iblogger.org/xugonor.pdfIn PDF document text
    • http://kozugufasuroti.mygamesonline.org/effective_meeting_agenda.pdfIn PDF document text
    • http://rukawagamijo.iblogger.org/tuvozewanok.pdfIn PDF document text
    • http://kipokefurur.mygamesonline.org/kidizibinaxubegigi.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/kudowo/bearded_dragon_facts_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/23012080446.pdfIn PDF document text
    • https://52a72965-a6d2-471e-b66a-59a59a4d663b.filesusr.com/ugd/e643da_5e64293f22404124ba79e7bad7c83d61.pdf?index=trueIn PDF document text
    • https://8909b315-4d59-4940-aabf-0fdaa532e0ad.filesusr.com/ugd/4542d9_ed4f9e9ced634f30a52d23e35b3cb6f4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xarojapi/california_cooperage_hot_tub_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b36bebb-541f-472e-b2c7-2187e9a6a629/harry_potter_and_the_order_of_the_phoenix_pc_game_buy.pdfIn PDF document text
    • https://1618b3f4-dcc0-4047-a816-eeb1cbe43c51.filesusr.com/ugd/a01749_7ae54d77f261460cbfa0a86df8ddc1e2.pdf?index=trueIn PDF document text
    • http://kutoxinupuroxo.onlinewebshop.net/jordan_normal_form.pdfIn PDF document text
    • https://1a447ccf-a6a5-490c-ad31-399ae8169532.filesusr.com/ugd/cf5184_dcbd92d7250446ba8139d005a2ca9a38.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/95f0aa41-32e3-46c1-bc39-0518e7e33d57/desosuxuzamikoziz.pdfIn PDF document text
    • https://dc383e6d-b7a3-4e67-a88a-227fa542b6c3.filesusr.com/ugd/72b0e7_0f7447f9c90a4162970836a65b2da50f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/free_sap_accounting_software_latest_version.pdfIn PDF document text
    • http://dosejugofifates.rf.gd/23295838297.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/finurodixulotujun.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/miponobawididu.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/google_maps_api_key_billing_account.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/what_should_a_compare_and_contrast_essay_provide_brainly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/770677a1-0b83-40a8-a3fe-fdf18601a825/zojirushi_micom_water_boiler_and_warmer.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F0 4904 bytes
SHA-256: cc192feb1cee0b9f0efacd96ffa33d1144f09ac288706a20643697a5d106b233
font_01_sfnt_off000111c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111C7 13012 bytes
SHA-256: b48451c5f85df85250834a6a4590cc435dd7859f33bfc53f5a245ed3082ee23d
font_02_sfnt_off00013d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D64 16348 bytes
SHA-256: a1139aac8e9ebfa1f38e245d66a597c470780fbaa1fd66247df14918b5132646
font_03_sfnt_off0001533c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1533C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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