Malicious PDF — malware analysis report

Static analysis result for SHA-256 d50e75d507b88fac…

MALICIOUS

PDF

67.7 KB Created: 2021-01-03 02:55:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d27cbb3c60149983d942544ff635458d SHA-1: e76ab0fa3246c2a8a8aeb6aa393acb755fa44def SHA-256: d50e75d507b88fac55a68250f34d793f9faa90b95d63a0378b8da8c27951b3dd
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ggraff.ru, which is flagged as a critical heuristic. The document body, though heavily obfuscated, suggests a lure related to legal documents like an 'affidavit of repossession'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

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
  • 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://ggtraff.ru/123?utm_term=affidavit+of+repossession+idaho In PDF document text
    • https://cdn.sqhk.co/wavefekus/hSSmZie/78314394772.pdfIn PDF document text
    • https://cdn.sqhk.co/sulojumi/fjegjqa/sparkling_mineral_water_vs_regular_water.pdfIn PDF document text
    • https://cdn.sqhk.co/powirafawume/TXiijg4/jonesboro_ar_72401_county.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/60ac8d0e-2f63-4941-8e2f-00a1b0d5785d/11342435017.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/joravojimobuj.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/what_is_a_focus_group_discussion_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/apple_email_format_for_employees.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83526004-7b78-44ea-9d7a-65dbe23a5862/cars_3_xrs_rocket_racing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44991419-1b0a-493b-a1a2-8d3b212c59c2/fit_over_50_by_walt_larimore.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/clear_dash_hd_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/macbeth_comprehension_questions_and_answers_act_2.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_off0000cc76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC76 5148 bytes
SHA-256: f58cd1f40c9498ed5de39bab2805185cf9c1f147f6155034e1dfb9ebc54d1320
font_01_sfnt_off0000ddfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFD 10608 bytes
SHA-256: c9bf2c029add68197f80ec04df4f6417290724ee6a868f0a457d9d07ae7491f8