Malicious PDF — malware analysis report

Static analysis result for SHA-256 0217cc6cd66e5e35…

MALICIOUS

PDF

77.9 KB Created: 2021-03-13 13:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a894a7f40a13b6f7e5d2836c4a3a498b SHA-1: d908364b18d15ea278e589330d22a0853a6218bc SHA-256: 0217cc6cd66e5e358284e107364d7a5b3afa61be88150209b21c63a408043374
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URL pointing to 'https://xezojetit.ru/wix?keyword=to+kill+a+mockingbird+study+guide+answers+chapters+12-31', which is likely used for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'To kill a mockingbird study guide answers'.

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://xezojetit.ru/wix?keyword=to+kill+a+mockingbird+study+guide+answers+chapters+12-31
    • https://cdn-cms.f-static.net/uploads/4491686/normal_5fd8164082052.pdf
    • https://cdn-cms.f-static.net/uploads/4415045/normal_6011948f16abf.pdf
    • https://cdn.sqhk.co/dipasupor/gdhjhdZ/11621739122.pdf
    • https://cdn.sqhk.co/dedizozife/hargegj/animal_jam_play_wild_wiki_raccoon_tail.pdf
    • http://vipimuxatomefi.medianewsonline.com/jotisi.pdf
    • http://bibuzikufaje.mygamesonline.org/99191653989.pdf
    • http://wavapivanuf.scienceontheweb.net/einstein_biography_in_bengali.pdf
    • https://cdn-cms.f-static.net/uploads/4453134/normal_601135f0c361a.pdf
    • http://wotedogupowu.sportsontheweb.net/69257605561.pdf
    • http://b2b-servis.ru/14043248688twp00.pdf
    • http://mx50off.info/tp-link_tl-mr3020_setupt6pcy.pdf
    • http://sale-siberian-force.online/the_vampire_diaries_the_awakening_summary19qpq.pdf
    • https://cdn-cms.f-static.net/uploads/4382430/normal_602002463580f.pdf
    • https://cdn.sqhk.co/wazikunal/gOucjii/datarawogivifuvadifune.pdf
    • https://static.s123-cdn-static.com/uploads/4422890/normal_60088af2c8ed7.pdf
    • http://mailedflkf.site/553602849606nkxs.pdf
    • https://cdn-cms.f-static.net/uploads/4379046/normal_6038132837704.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lobopekogolo.onlinewebshop.net/kakilafi.pdf
    • https://uploads.strikinglycdn.com/files/85a40c1f-5c56-4fd8-9b24-aaa46780fea0/outlook_preview_handler_download.pdf
    • https://uploads.strikinglycdn.com/files/07b1d3b4-f4c7-46be-a26a-baa65b3c1f35/julagami.pdf
    • https://uploads.strikinglycdn.com/files/6c3fc234-16f8-4f18-acbf-95bc2a7efd05/44828446444.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_off0000e832.bin
3f8feff1aafdb4c05bcb6e79ba376c65add6d6ecb4fb008bdcbcb367a99b0b6b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE832 6216 bytes
font_01_sfnt_off0000fd4d.bin
d1a5af021373796d8af22699a95b465c43fd6bf8be9799341d015abf89505e3a
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4D 14184 bytes