Malicious PDF — malware analysis report

Static analysis result for SHA-256 f67698758ab929f1…

MALICIOUS

PDF

94.9 KB Created: 2021-03-20 23:09:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0057839db14af26b3c6a017bac3b5a34 SHA-1: 53f30475b3b19702db0158f1eb80b49299bd005d SHA-256: f67698758ab929f10059149984a7a1b1a3e0df80fa2a3de8211a23a3bab4453f
164 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. It uses an urgency-based lure. 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 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://mezovuduw.ru/aws?utm_term=the+trials+of+apollo+the+hidden+oracle+quotes PDF link annotation
    • https://moxuvobojivoz.weebly.com/uploads/1/3/0/8/130873852/lurejuzegajiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415930/normal_5fdc21ca93e04.pdfIn PDF document text
    • https://degitigurot.weebly.com/uploads/1/3/4/3/134337886/4620636.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388038/normal_5ffb753665aae.pdfIn PDF document text
    • https://cdn.sqhk.co/mitugejaxel/hie8igP/92975469372.pdfIn PDF document text
    • https://cdn.sqhk.co/niwuwusogoxo/bgdiak9/solo_pvp_guide_eve.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/fEii7jd/myclassboard_login_global_edge_school.pdfIn PDF document text
    • https://cdn.sqhk.co/sokulutesi/IjdfghS/speed_night_3_hack_version_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_c7ddb064aba642509f23121535622423.pdf?index=trueIn PDF document text
    • http://varulorafa.epizy.com/78587020888.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/google_sky_map_app_free_download.pdfIn PDF document text
    • https://5121d360-3808-4f61-aa44-d87cf2d9d428.filesusr.com/ugd/032e8a_870515f198ce44b8ba231a848ce53d31.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mipizaju/39801309842.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/arabic_font_for_iphone_free.pdfIn PDF document text
    • http://beximor.epizy.com/angular_2_date_format_dd_mm_yyyy.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/14771936232.pdfIn PDF document text
    • https://176fe727-baa2-4f6f-8ab0-cddcd97ecb74.filesusr.com/ugd/45df28_8996ba783af543a4ace6c98b96bc379a.pdf?index=trueIn PDF document text
    • http://zukanimi.epizy.com/nutrition_diagnostic_terminology_2020.pdfIn PDF document text
    • http://selafaveso.rf.gd/black_panther_trailer_bgm.pdfIn PDF document text
    • https://cb70cc59-2297-49c3-b7e2-2ac7e26e28d4.filesusr.com/ugd/4479ed_b93d3396d2a14318b14e370f8bec178d.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13080 5320 bytes
SHA-256: b3154d5e601ad2569a3d1e376593edb659a429f5dba6a278ab3374e9a0adad26
font_01_sfnt_off0001428a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1428A 12316 bytes
SHA-256: c75eea9e16e024a752f7abaa3be98eec3ab5ebf1aac551a3bc189c100207cda6

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