Malicious PDF — malware analysis report

Static analysis result for SHA-256 58adf6779d30498f…

MALICIOUS

PDF

74.8 KB Created: 2021-03-29 00:37:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c19b3f50e1691bf9f15d872fd9a8aac8 SHA-1: 84bbd4dcae7f37c5eef6046bdb018e619b889647 SHA-256: 58adf6779d30498f8986d7e226236774217508d99dae909889b7bc6e4af3367a
154 Risk Score

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/award?keyword=asymptotes+questions+and+answers+pdf In PDF document text
    • http://vizazovabula.mywebcommunity.org/raynor_garage_door_opener_problems.pdfIn PDF document text
    • https://cdn.sqhk.co/najuvotuwoz/Cjbgcif/20329345244.pdfIn PDF document text
    • http://gitikirazidapi.medianewsonline.com/kipitegovedamoki.pdfIn PDF document text
    • https://cdn.sqhk.co/vovawumusa/jeRiijg/xbox_one_x_specs_pc_equivalent.pdfIn PDF document text
    • http://xixofafil.medianewsonline.com/celestial_objects_for_common_telescopes.pdfIn PDF document text
    • http://batut.space/pidarigiecn0.pdfIn PDF document text
    • http://funseeds.site/cant_help_falling_in_love_uke_chords_easykmlv3.pdfIn PDF document text
    • http://dalidusiz.mywebcommunity.org/how_many_calories_in_a_slice_of_margherita_pizza_from_dominos.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/6393b679-4666-4946-a174-f6ec2f005feb/sears_12_belt_drive_band_saw-sander_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/pevibodatuwon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2e957d3-0c1f-47b6-9680-3c2af4ecf89f/jejozus.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/51278762819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6ca7d13-f75c-4b25-bec1-33394247e18e/retotuwatuj.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/maps_me_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/nomuforavimaridezipi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bee39263-bc38-4289-91dc-cc1bbec6e3c0/what_does_the_yellow_circle_with_black_star_mean_on_snapchat.pdfIn PDF document text
    • http://ranitirunom.myartsonline.com/computer_application_in_physical_education_and_sports.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09f2c696-2d7e-424d-967f-2c464c4107bf/on_the_road_truck_simulator_map_size.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/51999779173.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_off0000e624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE624 5464 bytes
SHA-256: c89d847d74074a2468a670c815c6add10af2a969bef9bfe8a8639f43cf032a79
font_01_sfnt_off0000f8ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BA 10904 bytes
SHA-256: 45dcece69fd39078707d1efbd98c833328c701ef05b987d65fdfd66162bdc69b