Malicious PDF — malware analysis report

Static analysis result for SHA-256 208ec9c6b2e19442…

MALICIOUS

PDF

78.6 KB Created: 2021-03-19 20:17:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 26c81a4db0cc91972e86e6e03f2683b9 SHA-1: 7295da2e2b2a93b2b5fc71c6256c8678e5dbcbdc SHA-256: 208ec9c6b2e194429d0a5bab351140e7eab4a9be4af89faa89a2c5a75bf2539f
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 0.9961

Heuristics 5

  • 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.
  • 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://vilenefex.ru/123?utm_term=abdiel+capital+performance PDF link annotation
    • http://dsv-trening.ru/nibibuzavodozst2xf.pdfIn PDF document text
    • http://dommasters.site/watchman_nee_the_spiritual_man_youtubejzxag.pdfIn PDF document text
    • http://pl50off.info/dell_as501_soundbar_driverc1ych.pdfIn PDF document text
    • http://mosquito.codes/zebasosarxpnm9.pdfIn PDF document text
    • http://alcozerox.com/64815022421yb083.pdfIn PDF document text
    • http://myfoxing.online/15304201253xc1d6.pdfIn PDF document text
    • http://sportplays.ru/rii_keyboard_rt518_manuals0e9r.pdfIn PDF document text
    • http://chtotakoeverti.biz/8248931802h459q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ad9f1622-e3b7-49db-bfef-326c48fb2104.filesusr.com/ugd/a467d2_de838d1b84b348c4b529a1ad56812618.pdf?index=trueIn PDF document text
    • https://af6bd0e1-9fb2-4c52-b6e5-df6188d17e94.filesusr.com/ugd/771d18_d76628206e92469380babd2af0c20c62.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/74490467364.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/68079622447.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/motorola_hx550_bluetooth_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e59975-41ae-4d1d-a86e-287e0cef6772/deziji.pdfIn PDF document text
    • https://beea745c-e446-4317-9ad8-fe501d584c0a.filesusr.com/ugd/9196db_a78853c7dff44572abda103db0a1048e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2b00aec-a1d4-4e5a-9882-ebf69864a2bb/grammar_active_and_passive_voice_practice_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/94520186262.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/89080114368.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/96847785151.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/35151311542.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e393b271-c3c1-405e-9ec4-1c46cba8342a/garmin_forerunner_110_battery_life.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/4541336073.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/art_106_ley_aduanera_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/kujukikuwaxelobeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e21fdbf-2375-4fd5-bb43-02fec427e814/77243129549.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3455895b-3478-47a1-a788-2a68bd1ee0f8/using_trigonometry_to_find_missing_angles_of_right_triangles_worksheet.pdfIn PDF document text
    • https://18e99e0c-7034-4a8c-9069-267580a295b8.filesusr.com/ugd/b337f5_f9998a24ee78477da4e5d70ca1db96c3.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_off0000f2b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B7 5252 bytes
SHA-256: b8b13ade4354a9ed0dd7e8f5f420cc05408078628896050aef8b555888d82181
font_01_sfnt_off0001047b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047B 11472 bytes
SHA-256: f00a9c9e3c041d1e2bb2420b70adb8a5776c01d6be601ef88b6f27c370995f78

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