Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8caa04a7a0030fd…

MALICIOUS

PDF

67.3 KB Created: 2021-06-08 21:54:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: efffa0484ae7f41aac877dc1bf9d5550 SHA-1: 532a79e5f6752ae3b715d954f1403d27fbd44f5c SHA-256: f8caa04a7a0030fd42b1661d88302be62bcc9462fa5f37c968aa672107980b60
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'smidgel.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, references 'Jannat ke pattay in english pdf', suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://smidgel.ru/pbw?utm_term=jannat+ke+pattay+in+english+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411694/normal_603baf70aefc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420600/normal_606297ee52872.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418180/normal_5fd2441b9c087.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501794/normal_600ca5a573c03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378856/normal_5fe890179d012.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446499/normal_5ff079f00fe21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425230/normal_604eae2263a4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495385/normal_5fd1260cab9af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479224/normal_5fd172e60a789.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496151/normal_60bde64479472.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418567/normal_60218a08ad251.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473645/normal_5ffe2701c0aab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387566/normal_6019d8610b5f8.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/6d78d028-5481-4c45-b042-3b7a52f8840c/jlab_wireless_earbuds_wall_charger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1801c509-0a60-4c82-aa7f-30fa32bc2868/estimating_decimal_products_and_quotients_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0f7e2ce-42ab-47a7-b4df-b065332932bf/how_to_set_performance_review_goals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a15f50c-20fc-46d3-b8cc-5fe088f70e84/volvo_xc90_repairs_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51208cdd-9f98-46e3-848b-791bf2243b04/55283879114.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_off0000c3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B6 1560 bytes
SHA-256: 966c7781eccc4dc005f951bad0cc15e91fa3b39f9039a66ebe0fb482cd9634fb
font_01_sfnt_off0000cba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA7 5364 bytes
SHA-256: 67b01cf0300ee28fffae12160de99ad85e339bb4e7edf745eafd47d3118687f5
font_02_sfnt_off0000ddf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF5 9936 bytes
SHA-256: 2211ce9631e01c2fafe513e0adaa00e2b8dee862e0646b733eedb953632b7837

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