Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ad7fb18f170bf8…

MALICIOUS

PDF

76.0 KB Created: 2021-03-28 14:54:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b9fdc0054b554664326d002f76f4989 SHA-1: 6057ec6b61dc4e46de36b76c4a2ca59fe22c0155 SHA-256: 87ad7fb18f170bf85d4b12adb6d6108c2abd141c6420358697277553c7667d88
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, with a specific ClamAV signature indicating it is a phishing trojan. The PDF contains an embedded URI pointing to 'lozipotod.ru', which is likely part of a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/wix?keyword=notary+test+study+guide+ohio
    • http://belplitka.ru/very_awesome_live_wallpapers_for_iphonehzkh7.pdf
    • https://kidivine.weebly.com/uploads/1/3/4/5/134576756/cacaf946d9.pdf
    • https://cdn.sqhk.co/ziriziwebu/2gejjYv/littlest_pet_shop_toys_for_sale_near_me.pdf
    • http://igcopyrightforhelps.com/bukegaja0ch9e.pdf
    • http://misstourist.info/ejercicios_resueltos_funciones_trigonometricasd9pnw.pdf
    • http://freefire-gifts.com/35634736932beyvr.pdf
    • https://fejegexe.weebly.com/uploads/1/3/4/6/134617501/3a55d4979.pdf
    • http://card2card.live/java_basic_game_programming_exercisesgpjya.pdf
    • http://sarhello.online/93121441686vxmu2.pdf
    • https://vimuzepujox.weebly.com/uploads/1/3/4/3/134368191/1240264.pdf
    • https://cdn.sqhk.co/lewivapawo/CyiiZjj/rajawixesa.pdf
    • http://fortuneo.biz/the_memory_string3pr5o.pdf
    • https://wedabivugexum.weebly.com/uploads/1/3/0/9/130968949/topijiburuzekag-jizoxifare.pdf
    • http://chestlune.online/96227812627vs0bs.pdf
    • http://easterthjg.com/metabolismo_del_calcio_fosforo_y_magnesiorcq4u.pdf
    • http://ogranicbio.fun/how_to_make_a_pressure_transducerypz68.pdf
    • https://sixumegeb.weebly.com/uploads/1/3/4/4/134476160/68b8d7269d615.pdf
    • https://jowopuvuramikir.weebly.com/uploads/1/3/5/3/135313070/nizepiseweguxa-korine.pdf
    • https://cdn.sqhk.co/towevefizub/ccMGrK8/logufevabavunafomezog.pdf
    • https://vipapixamez.weebly.com/uploads/1/3/0/8/130814430/kadikalusoror.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bezorito/14115386934.pdf
    • https://s3.amazonaws.com/xezujuxoz/internship_bi_weekly_report_example.pdf
    • https://s3.amazonaws.com/xapota/how_do_you_make_a_hood_pattern.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebd8.bin
c154b1767daaf5e143618740fb070c3f25111bc481f5565955faa2f01f74d987
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD8 5124 bytes
font_01_sfnt_off0000fd4e.bin
0647dc8b46619b5dbe4fdc39999a532eac0cb72d74782cbba51314135a703386
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4E 10948 bytes