Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d83c52be8a15329…

MALICIOUS

PDF

77.9 KB Created: 2021-06-10 17:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: fe76e93fc96695a82096dadde6367247 SHA-1: afee160da7fc392fc5cc1ca5007549bc65b60736 SHA-256: 9d83c52be8a15329bf5a8112ac37228cf71ce2d1a067cf05d4f0b05271591349
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. The embedded URL points to a site offering a 'Standoff 2 hack apk download', suggesting a phishing or malware distribution lure. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic strongly suggest the document is designed to trick users into downloading potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://archism.ru/pbw?utm_term=standoff+2+hack+apk+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411001/normal_603e2b27edabe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418987/normal_5fd5facca6d6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388065/normal_600eb879eeea0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422918/normal_6007b9b2af43d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426416/normal_5fe8b80a1eb2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527357/normal_606198483d665.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408186/normal_5ff0906b73138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_6011c6cf58d78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465719/normal_5fdd0359d5938.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464707/normal_60648cf0b8e91.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/348bcd40-8d46-452b-9d32-ac2d8e9fd125/predator_2000_inverter_generator_wont_start.pdfIn PDF document text
    • http://nefusim.pbworks.com/w/file/fetch/144455073/how_to_make_bunk_bed_stairs_more_comfortable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3302083-c4ce-472a-877e-b95aa4244883/how_to_use_echo_show_2nd_generation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea0f0d87-1829-4697-a808-c4d547022d66/organizational_structure_definition_literature.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a16129d-225a-4416-b1d2-4b6296dbe7f7/outdoor_survival_class_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d39d26ca-40ea-4f92-b897-730b3aaba5f1/tafonubivonukulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a2a51bc-0824-4cfe-a83c-ce83f5fc9aca/how_do_you_cook_ribs_on_a_smoker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/290f2c66-09e7-4dc7-8614-f0d55502aa09/wekugunomavodorodatik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecdb8778-c5dc-42a6-8c62-dde35120c027/61321441646.pdfIn PDF document text
    • http://vatezerajigo.pbworks.com/f/7218299522.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53241d74-9ace-4978-9166-84438feaee79/13391709824.pdfIn PDF document text
    • http://dejimebez.pbworks.com/w/file/fetch/144620328/tijemuzawonegadam.pdfIn PDF document text
    • http://rorazokazog.pbworks.com/f/how_to_get_cartel_coins_in_swtor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9113e262-e81a-4602-856e-01cce711facb/porters_5_forces_template_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10eb509f-383f-4f52-83c9-f9ee5791afe9/did_rainsford_kill_zaroff.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_off0000f15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15E 5360 bytes
SHA-256: 1add30984cb218a24dda99e88238487a948a1b8c1cc6db9020134cb240883878
font_01_sfnt_off000103b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B8 11572 bytes
SHA-256: eba85ae1b1dad3a87d87b6f0d2fba2b35fec8ad54246c5e25a8cb9f4b0565dac

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