Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd13295be18d1cfb…

MALICIOUS

PDF

75.9 KB Created: 2021-03-16 21:14:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6923dd1d12442010dfb4ceee0bf11474 SHA-1: d6f34f4a29978e89befd239cfc29d53b963096af SHA-256: bd13295be18d1cfbab9e60075056fec7b5f740ab011fbdae7f971162ecd4e0b0
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, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a malicious payload or conduct phishing. The presence of PDF-specific heuristics further supports its classification as a malicious PDF.

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
  • 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://nipisod.ru/123?utm_term=airbnb+style+guide+pdf
    • http://train-home.ru/pirowosatifinpul7.pdf
    • http://zubiki.top/lord_woolf_final_reportq0p09.pdf
    • http://smeh-mif.space/zifobetotakef3tp5.pdf
    • http://easterthjg.com/21430097140z3k95.pdf
    • https://pizofozinolom.weebly.com/uploads/1/3/4/4/134459645/dedutokuwuf-rizitasafefuna-pifuzoramoderef-mulireratuwex.pdf
    • http://shoop-fh.ru/winuxopiwoxigupegowenilaphm1lm.pdf
    • https://xunitaminovo.weebly.com/uploads/1/3/5/3/135349323/1365523.pdf
    • http://spencermcman.us/70875440193mscut.pdf
    • http://netopodimamo.mywebcommunity.org/the_ultimate_keto_cookbook_270_recipes_for_incredible_low-carb_meals.pdf
    • https://sefidobove.weebly.com/uploads/1/3/4/3/134320077/b1e65dd5e9695c.pdf
    • http://bigtittybella.com/88851548424c55be.pdf
    • http://riragukigud.scienceontheweb.net/38596035453.pdf
    • http://muzhskoizhurnal.ru/how_do_i_change_my_safety_first_ear_thermometer_from_celsius_to_fahrenheitahlht.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kurivixudenetiw.epizy.com/nonibafewimoluwuxojusu.pdf
    • http://kovaganobo.rf.gd/92513943312.pdf
    • http://wenares.myartsonline.com/how_to_become_a_marketing_manager_without_a_degree.pdf
    • http://rivezupi.rf.gd/ruger_mini_14_tactical_rifle_reviews.pdf
    • http://xopibakexozar.epizy.com/how_much_is_1_dollar_to_naira_in_the_black_market.pdf
    • http://novosumagib.epizy.com/xefibajowusaxakaf.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_off0000eb4e.bin
657cab2f64c0a3ebd297e6228b8a110014b3f3d752c23adeca8ca7afaab1cac7
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4E 5228 bytes
font_01_sfnt_off0000fd2f.bin
1720b42db2e216f139ee0818b7284a3b39c180bb517d5d35e31d0827a5c41df5
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2F 11332 bytes