Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0e3dd979e9aa55a…

MALICIOUS

PDF

70.4 KB Created: 2021-03-21 06:33:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: c80081ddba6512bc09cead4128f7f86d SHA-1: 556ac278a9da4acbac5ae150fb5580d15766ae5e SHA-256: b0e3dd979e9aa55aae6eb389bb79a681b36a04906c3461b05887f692bc686e2b
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'yafferge.ru', which is associated with phishing lures. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to downloading 'The Economist' PDF, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/award?keyword=the+economist+pdf+2020+free+download In PDF document text
    • http://maska-respirator.com/house_music_top_100_all_timei37hf.pdfIn PDF document text
    • https://cdn.sqhk.co/buzaxelubot/JE7dhgS/plastic_snake_cube_puzzle_solution.pdfIn PDF document text
    • http://gvidilon.ru/gusodesejumawavajanuwj3pwg.pdfIn PDF document text
    • http://xoxosedefoxadu.mygamesonline.org/chick_fil_a_ingredients_grilled_chicken_nuggets.pdfIn PDF document text
    • http://forexgeeks.net/the_things_they_carried_summary_chapter_1-4qc2wq.pdfIn PDF document text
    • https://cdn.sqhk.co/pakebisas/Aiaijie/facebook_app_installer_do_i_need_it.pdfIn PDF document text
    • http://vebifitapex.mypressonline.com/20750295446.pdfIn PDF document text
    • http://thestablestl.com/zonoxofulagomgxzk5.pdfIn PDF document text
    • http://pejelurim.getenjoyment.net/xusewizajav.pdfIn PDF document text
    • http://gbo.guru/327514174466cwa2.pdfIn PDF document text
    • http://creditscorefix.info/26443822850aq2uc.pdfIn PDF document text
    • http://usafiles.net/10jT/2021-03-13_The_EconomiIn 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://s3.amazonaws.com/wixanarer/blood_components_and_functions.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/17588539907.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/reea_feat_akcent_rain_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/14121967885.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/kidde_kn-cosm-iba_compatibility.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/supply_chain_management_full_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/66640765067.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_off0000ca8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA8D 5496 bytes
SHA-256: b3f9aeac8e8ab8ac9fb3c7b0bc02d4c530ec3c412513f67f0aa2b9216fec1a90
font_01_sfnt_off0000dd12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD12 9780 bytes
SHA-256: a70d5134b7ea33691880357e3068c32606b00c162feff371a108e402ca8c0f31
font_02_sfnt_off0000fe8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8A 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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