Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cde25b9196c71b1…

MALICIOUS

PDF

107.0 KB Created: 2021-04-05 16:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a810a5b96363389aab63a3bdee5341a SHA-1: eb43bf1589a46f58178008d1f821cc329dd454b9 SHA-256: 1cde25b9196c71b1e6fc60dbf484019b1bc171ef9ff5206d7b81c4055581dee5
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into clicking it. The document body, though heavily obfuscated, contains text related to embroidery stabilizers, suggesting a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jacksth.ru/strik?utm_term=how+to+use+stabilizer+embroidery
    • https://cdn.sqhk.co/napumefu/hjhgdgf/vimobukilidizeruzobige.pdf
    • https://cdn.sqhk.co/loxosefivipo/iaiejao/zen_pinball_williams.pdf
    • https://static.s123-cdn-static.com/uploads/4448536/normal_5fce86c27ca3a.pdf
    • https://cdn-cms.f-static.net/uploads/4378853/normal_5fd5fe6d861b7.pdf
    • https://cdn.sqhk.co/mijajijem/ihbhfGR/41600060842.pdf
    • https://cdn-cms.f-static.net/uploads/4415944/normal_603687500fe27.pdf
    • https://cdn.sqhk.co/zubavagi/6hFR22V/retroviruses_are_defined_based_on_which_characteristics.pdf
    • https://cdn.sqhk.co/kulobibab/g6hjtdB/gumball_watterson_height.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wupiwupiwot/holy_bible_niv_audio_free.pdf
    • http://luvopekun.epizy.com/linear_inequalities_worksheet_answers.pdf
    • https://s3.amazonaws.com/dusined/42384364495.pdf
    • https://s3.amazonaws.com/rixevozajixezos/xokuwuwisonediluwix.pdf
    • http://vikalasur.epizy.com/64089919598.pdf
    • http://kukosuluwab.rf.gd/how_capitalism_saved_america.pdf
    • https://s3.amazonaws.com/kovozenamofox/princess_bride_free_online.pdf
    • http://mepumubim.rf.gd/10728457748.pdf
    • https://s3.amazonaws.com/falevi/isabelle_de_leon_miss_world_answer.pdf
    • http://femodizabofowu.epizy.com/lopise.pdf
    • https://s3.amazonaws.com/tosego/unit_conversion_cheat_sheet.pdf
    • http://razebegapusej.rf.gd/piragelezanakapo.pdf
    • https://s3.amazonaws.com/wufujudisu/games_parts_of_speech.pdf
    • http://liwituro.epizy.com/sesotho_bible_for_android.pdf
    • http://muxobuduxude.epizy.com/dispensing_error_log_sheet.pdf
    • https://s3.amazonaws.com/tedowafomaru/is_6_figures_a_good_salary.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_off00016101.bin
4cc4dc4592cd40501995c31e0071f3322ea6581a05eb88a18c4fc6920502eafc
pdf-font-stream PDF embedded font (sfnt) at offset 0x16101 5316 bytes
font_01_sfnt_off00017316.bin
4f49dce3b2ae3a2e67d65e1cf582dd8443d9f5f1f2927e6616e932ba9539565e
pdf-font-stream PDF embedded font (sfnt) at offset 0x17316 12572 bytes