Malicious PDF — malware analysis report

Static analysis result for SHA-256 869fc1f314c9fbcf…

MALICIOUS

PDF

78.0 KB Created: 2020-12-30 14:40:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ce1ef29ef59575ade9bbdd0e3fe68ab1 SHA-1: d118e057ca9a6eed2c9c10c4c66aca8380c17ced SHA-256: 869fc1f314c9fbcf341b68bf1cd375481d372d2f7a3c2afbaed4b2cc1fbba631
214 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URLs are likely used to distribute further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/123?utm_term=internet+gratis+apk In PDF document text
    • https://cdn.sqhk.co/tavikagisato/aiaicij/xiduradon.pdfIn PDF document text
    • https://cdn.sqhk.co/ranotigu/ghicIvE/miriwuxolif.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/aYhbRkc/minecraft_pocket_edition_mod_launcher.pdfIn PDF document text
    • https://cdn.sqhk.co/xelalizogim/jejhXia/zombie_catchers_hack_unlimited_plutonium_download.pdfIn PDF document text
    • https://govonomuvilikiw.weebly.com/uploads/1/3/4/6/134620083/rexivedexad_kagopasom_bapexejajo.pdfIn PDF document text
    • https://metiledozixav.weebly.com/uploads/1/3/1/1/131164016/3621898.pdfIn PDF document text
    • https://gunobapeve.weebly.com/uploads/1/3/4/7/134706327/5634821.pdfIn PDF document text
    • https://zupavuzinopaz.weebly.com/uploads/1/3/4/2/134265708/bede1e.pdfIn PDF document text
    • https://cdn.sqhk.co/tarozawowe/jaohi0I/download_game_counter_terrorist_mod_apk_android_1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0ce34ed-9d10-437a-8038-ec4ad015a9c5/legufijo.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/begin_the_beguine_line_dance_step_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7261278-2d6a-438c-8eea-4d84e8df050a/19416980968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6ba2adf-2248-4f43-9456-8a69f50012a0/84513329483.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/barbie_doll_image.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/majesty_instrumental_by_peruzzi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000defa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFA 4956 bytes
SHA-256: f214d600e269b1b5e48aafef2a8bf6843dcca092bf35262dd2ed1c7de82af273
font_01_sfnt_off0000efee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEE 11228 bytes
SHA-256: 32c96cbc3db31c946ae5450ebbf642d3f3c9048a963e385d4bcc247bc6e91ba0
font_02_sfnt_off00011580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11580 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660

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