Malicious PDF — malware analysis report

Static analysis result for SHA-256 37c656a4cfcc129b…

MALICIOUS

PDF

81.6 KB Created: 2021-05-22 01:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 5706889a7dcd2427f4fdac333a03c730 SHA-1: 9d1e77aff314742bf72e9ff695d07e250db5efd5 SHA-256: 37c656a4cfcc129be6fbf8579b738d9e9e884cf2c802082c50f3a4a009678666
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a search query, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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://bologen.ru/strik?utm_term=what+is+the+slovin%2527s+formula PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375350/normal_604cee86767ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473322/normal_5fd228180e614.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426814/normal_5fdc548eab94a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457881/normal_6000f261b4de6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471091/normal_5ffcb8f94830b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470387/normal_5feb475bc8528.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419415/normal_5fc84bd118e6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421056/normal_5ff8f87af404a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366344/normal_5fdcdf074d0f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393369/normal_5ffbc5f16a937.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380854/normal_5fe0423389496.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451212/normal_5fc6abf729242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443617/normal_605fa2d13a56e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371497/normal_6007ed97651a5.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/8acdb69c-1344-453d-a7e6-a9a5ee0be24e/what_is_the_relationship_between_theory_and_practice_in_education.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/govafuxowomazed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eb2a080-f126-4f60-8fdf-cf180eccd137/wings_of_fire_memes_glory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49f1454c-f73d-43ba-bfae-bd69fff7b842/88920267225.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/sujopusirulizaba.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/msci_acwi_fact_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35d8cdb9-3269-4f63-a96b-8573906f1351/the_one_minute_manager_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/msi_n1996_motherboard_drivers_for_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc434a2a-c83c-4ba7-ba0b-3a4e8cbe376c/larosotinulugupimuji.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_off0000f519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF519 5112 bytes
SHA-256: e1ba840c3e2680abf7c02907cd9415b330ef52835974eedcc8a3c5bf327c81df
font_01_sfnt_off0001066a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066A 15628 bytes
SHA-256: 61a6e61cebeb05798d5922c160795355abc3234c07df9e107aabd90fd2fff547

Open this report in the interactive analyzer, or submit your own file for analysis.