Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17fcfce53ee4e63…

MALICIOUS

PDF

69.1 KB Created: 2020-12-04 22:50:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e91e43e23f734fb6f5b3b492fcda9f61 SHA-1: 7e78fa41ab9d209e3f60ef48b772045cad8146e1 SHA-256: d17fcfce53ee4e6376ebb2bec5ca8ab8d13129af5dd7d993a12fef365883d8f6
154 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'civil rights quotes'. No scripts were extracted, but the presence of malicious redirector links suggests an attempt to lead the user to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://traffking.ru/123?utm_term=civil+rights+quotes+2020 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4404750/normal_5fc74b145c29c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc124ceb8467722f1d5c40e/t/5fc9178a4792084e3a77dc42/1607014283521/city_racing_lite_hack_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/golden_high_school_reunion_1969.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6ac042e537a05ef314d38/t/5fc7fce7b87ce24ef2a8262e/1606941927811/lenovo_ideapad_l340-_15api.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/95791992613.pdfIn PDF document text
    • https://s3.amazonaws.com/sibenuvokiwuz/silver_spray_paint_huffer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0672f60f2895dc1e54ab2/t/5fc0f0349ee0f32b8774b574/1606479924406/41203985873.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc19fdcbd14ff0dd2a1cd42/t/5fc484672dd96f59187e612b/1606714472398/1080_ti_for_sale_australia.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e5b8a3bf4b14aba92f9c/t/5fc1a1ed61e25426e1759ba2/1606525422974/16067542499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62f2457a-c05f-4e02-b3da-dc337e81491e/dibujos_con_triangulos_faciles.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf65cbbc819f1cf4d0a0ab/1606378955892/lerapofejifilameba.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/entices_crossword_answer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc292fabda9c57a97c8d54c/t/5fc894e292e74531f3cf6456/1606980834883/lemon_pound_cake_recipe_using_yellow_cake_mix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8402f702-81bb-4a53-a249-28440559d034/skyrim_hdt_collision_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/hypercalcemia_in_neonates.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/41549035471.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/dmv_car_ownership_records.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD351 5104 bytes
SHA-256: cd0a0941dca356d77b5455a7992aa8c3b8c8108ce768128ae98a2619ced8ad92
font_01_sfnt_off0000e4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B0 10056 bytes
SHA-256: f8a230cfb6c9dc8222b9a41b0f828c784d0e07fad40b6c6d0363c45d824aef1b

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