Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd8c3907a29827db…

MALICIOUS

PDF

111.5 KB Created: 2021-02-04 07:17:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0b60a4f7f22d5aff4e611ac461087d17 SHA-1: cc2170fff9724b48a9c2108cc1886e7cc3795fe8 SHA-256: dd8c3907a29827db09e68215d91c8e2dab902102c0632e2314f14703f5253c22
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, likely intended to trick the user into visiting a malicious site. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URI heuristic point towards a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/wb?keyword=mapa%20politico%20oceania%20pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495843/normal_5fd63d338d05f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476421/normal_5fe6b151c95f0.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/ihangjx/green_bean_casserole_with_cheese_and_bacon.pdfIn PDF document text
    • https://cdn.sqhk.co/tegatiwuwax/a6xiiEb/35202680779.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479673/normal_5fd7bf8fab3d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403413/normal_6008a73bf2af8.pdfIn PDF document text
    • http://baffer-shop.space/tobojivisunevsrh9q.pdfIn PDF document text
    • https://cdn.sqhk.co/votezevon/ffhZTz7/39860381680.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403688/normal_6018a67defb32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393208/normal_5ff094389c140.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425926/normal_5ff4de23a8a6d.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/dybibsu/75615468674.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/iuhcjbj/above_sky_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387921/normal_5fd31db721041.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/Ckjbdic/exorcist_cast_show.pdfIn PDF document text
    • https://cdn.sqhk.co/rowubuvuke/fibjdYA/sisamiwimerugizufenof.pdfIn PDF document text
    • http://flymoney.net/bafewanuzegobkf.pdfIn PDF document text
    • http://moymagazin.xyz/26132228092tfzqk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/apset_2018_question_paper_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/rudog.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/antutu_3dbench_apk_pure.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/67200227724.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_off00017259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17259 4880 bytes
SHA-256: a00ebfaa5c17f37b765f41c605cbaae569fd350754db8b00af06c3fcc255e546
font_01_sfnt_off00018318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18318 13512 bytes
SHA-256: aea9e097aaa38cea738786ee6e932d096a40b1461da6de649103475dc30e165e

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