Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d218bf16097305…

MALICIOUS

PDF

74.3 KB Created: 2020-11-23 10:13:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 749503a5455ae0f96043f3e7f5cf49c3 SHA-1: 24647a5b54c8db9e42c7d2edb2703e4958f28dbc SHA-256: 88d218bf16097305ec0991981e7f0412aa33a431e73f110f6166e42176feca4e
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://traffine.ru/123?utm_term=chick+fil+a+job+application+print+out PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379487/normal_5fbae7de8a399.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470830/normal_5fae3b872be2e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mubefula/used_manual_tire_changer_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/58245628842.pdfIn PDF document text
    • https://s3.amazonaws.com/mitakajazum/76159249675.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/33862288644.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/jorevonekubijidonirobasa.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/61742593450.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/event_planning_budget.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/electrocardiograma_normal.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/waltzing_matilda_tom_waits_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/mexuxuwavovagize.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/27468322274.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FB 4992 bytes
SHA-256: 2e1d8a8bcfe13ae9fa029b6fdc0334cec75511a1503dd06a28e9560348c1efe9
font_01_sfnt_off0000e9df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DF 10624 bytes
SHA-256: e9be2f642d679c79a3e495879281a4f7fe8487e34c21ab8b357e6b0609ed2068
font_02_sfnt_off00010de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE4 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230