Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da69580587aef24…

MALICIOUS

PDF

80.8 KB Created: 2021-05-28 13:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 01f719c48bbc464fd53e65d6d4b01300 SHA-1: 1ec709a02e5c95d66fe171ed5aa5b23ce4878ea7 SHA-256: 0da69580587aef24522e27a4c6048cd08adbb66ad8fc25e490ae2695c24bb391
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF documents. One of these links, https://baarspo.ru/strik?utm_term=does+verizon+have+me+tv, is flagged as suspicious. ClamAV also detected the file as Pdf.Phishing.Trojan, indicating a phishing or trojanized document. The presence of embedded URLs and the overall structure suggest an attempt to direct users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/strik?utm_term=does+verizon+have+me+tv PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410204/normal_6023963ce5365.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450347/normal_600397e51436c.pdfIn PDF document text
    • https://binamakizixevuj.weebly.com/uploads/1/3/2/8/132814618/6204277.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484380/normal_5fe4e53e5b301.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369507/normal_5fffcb5b374b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404310/normal_600cedf130d94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427526/normal_5fffb55fbb9fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464525/normal_5fee07047cc26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459182/normal_600ae965b4bda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457582/normal_6021f8cd4c9f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483388/normal_6068da8dce0d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451556/normal_60062c40a21ea.pdfIn PDF document text
    • https://gorejirulikem.weebly.com/uploads/1/3/4/7/134738880/6483419.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490244/normal_606a4493da1e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422637/normal_6008a4217916c.pdfIn PDF document text
    • https://vawanateriti.weebly.com/uploads/1/3/0/9/130969814/24b3ab4.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://uploads.strikinglycdn.com/files/eac5a4d8-51b0-43a4-a541-42d58da16629/jump_force_season_2_dlc_pack_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5204f61b-c156-4ac6-a317-b8330950267a/asus_p8z77-v_deluxe_usb_bios_flashback.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d3a0001-d434-4996-b76c-0818f9975414/how_much_does_it_cost_to_fix_a_mini_cooper_transmission.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30ef0d33-cb13-45c3-a002-22e671709313/25054333793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5d54aa7-ec0c-43ab-8237-5a5d3550ef05/how_to_calculate_vo2.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_off0000f227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF227 4788 bytes
SHA-256: 1410d3f6f30a74658274f44ead254e8f75e7cf195d658729f5cdceb5fed60487
font_01_sfnt_off00010242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10242 11332 bytes
SHA-256: 845db35d9ea8ed2ef2a83eb1c0817bfc3b16b2320f3c033abb5c5f819ca7ea14
font_02_sfnt_off000128d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128D5 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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