Malicious PDF — malware analysis report

Static analysis result for SHA-256 357a2139b420b85e…

MALICIOUS

PDF

75.3 KB Created: 2021-06-08 23:08:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e893d7a5ecfe334a935916b4e8d1044 SHA-1: 9d571d438552946291b8340b8e7e9a0ffd2b38a2 SHA-256: 357a2139b420b85e80469df0ae9aa15b6c178ab0d7e1c9359c166d1c2804a4a4
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'old tamil songs'. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://pixomot.ru/pbw?utm_term=old+tamil+songs+1970+to+1980
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/2f6244c8-5f8a-4a9a-96ef-4d8251a9c442/best_wodehouse_novels.pdf
    • http://visetululiv.pbworks.com/w/file/fetch/144706179/sowawuvigobowopujobisixik.pdf
    • http://wikoborumun.pbworks.com/w/file/fetch/144493635/common_american_english_words_used_in_daily_life.pdf
    • https://uploads.strikinglycdn.com/files/74313abf-d134-4659-8a02-715f92aebefe/how_to_fix_the_cable_on_a_self_propelled_lawn_mower.pdf
    • http://mikabipi.pbworks.com/w/file/fetch/144704064/mulupigugavudobu.pdf
    • http://xibosini.pbworks.com/f/zombie_horse_in_minecraft_pocket_edition.pdf
    • https://uploads.strikinglycdn.com/files/d7090566-d24a-417a-9ae7-85c1eaf96c0f/white_fang_part_4_chapter_6_summary.pdf
    • http://nubuzefi.pbworks.com/f/how_to_drain_water_from_samsung_vrt_washer.pdf
    • http://fevuxowina.pbworks.com/w/file/fetch/144604839/how_long_is_fast_money_on_family_feud.pdf
    • https://uploads.strikinglycdn.com/files/430c1055-4f51-45c7-8748-217245287833/free_will_define_oxford.pdf
    • http://zufogopojut.pbworks.com/f/rajiguguvoxo.pdf
    • http://vugufosenene.pbworks.com/f/ap_9th_class_maths_textbook_english_medium.pdf
    • http://pagorevet.pbworks.com/f/how_do_you_reset_a_converter_box.pdf
    • http://funuvutidip.pbworks.com/f/gazovuzedemajab.pdf
    • http://gemometis.pbworks.com/w/file/fetch/144519609/8499846824.pdf
    • https://uploads.strikinglycdn.com/files/92dafe56-5664-49d1-83b9-17f9e424dd99/93995465275.pdf
    • http://dagomiwavi.pbworks.com/f/mikurajujusumosemig.pdf
    • http://jetubabup.pbworks.com/w/file/fetch/144564417/how_many_calories_in_a_small_sonic_milkshake.pdf
    • http://gitixofipoxu.pbworks.com/w/file/fetch/144865818/78917582771.pdf
    • http://xegosigex.pbworks.com/w/file/fetch/144756267/duzawarikip.pdf
    • https://uploads.strikinglycdn.com/files/a6ae7700-a27d-4014-82f9-b7728ec19cf5/femepajomugiwuve.pdf
    • http://watusuxipidu.pbworks.com/w/file/fetch/144423567/59004548369.pdf
    • http://fuxedemama.pbworks.com/f/lista_de_verbos_sustantivos_adjetivos_y_adverbios_en_ingls.pdf
    • http://pefagisunel.pbworks.com/w/file/fetch/144524718/candy_crush_saga_mod_apk_unlimited_lives_and_boosters_and_gold.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc10.bin
efb0abcb764b1794af2d3daebb918c9a9fe31f9bcddaa078b5b6b84f8313cdfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC10 5372 bytes
font_01_sfnt_off0000ee42.bin
2ba17c193429dc66e87a9e09f1abe6a015ac2bda9bc8fd027203abe86286cabb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE42 10332 bytes
font_02_sfnt_off0001118e.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1118E 4324 bytes

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