Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4cfc12b136a77ad…

MALICIOUS

PDF

63.9 KB Created: 2021-06-08 19:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 11aca8f464010336ca31a29ada73615b SHA-1: 999021a123ff6d6b8157ca81aea06a7d40e4b167 SHA-256: e4cfc12b136a77ad70e66e57a38a2d91be07da03eaf2b2c0f984924cfe2b173b
124 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to disposable hosting and employing UTM parameters, suggesting a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document, likely attempting to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8535

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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=download+kingsman+full+movie
    • https://bulasenojagaroj.weebly.com/uploads/1/3/4/3/134357248/4061768.pdf
    • https://static.s123-cdn-static-d.com/uploads/4414701/normal_60b3a4afda0f5.pdf
    • https://cdn-cms.f-static.net/uploads/4477649/normal_60bbbcf3b8226.pdf
    • https://fewabobur.weebly.com/uploads/1/3/4/7/134713859/xigadaso.pdf
    • https://static.s123-cdn-static-d.com/uploads/4407991/normal_60b0045e1bfc2.pdf
    • https://lemosipezo.weebly.com/uploads/1/3/5/3/135326275/zapukiribowem-radusalo-xurojile-winelav.pdf
    • https://rawuwivusezorom.weebly.com/uploads/1/3/1/4/131406564/zonoxofu.pdf
    • https://cdn-cms.f-static.net/uploads/4500668/normal_602b984ce0eb3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mizelabe.pbworks.com/w/file/fetch/144598479/wajunegaba.pdf
    • http://xuvabufoj.pbworks.com/w/file/fetch/144456804/political_cartoon_analysis_the_gilded_age_worksheet_answers.pdf
    • http://togusan.pbworks.com/f/baldurs_gate_descent_into_avernus_review_reddit.pdf
    • http://farejutotej.pbworks.com/f/where_is_danish_food_from.pdf
    • http://ximusutoj.pbworks.com/f/java_oca_8_programmer_ii_study_guide.pdf
    • http://kufogokoges.pbworks.com/f/lapaferimawipa.pdf
    • http://fuxedom.pbworks.com/f/om_namo_venkatesaya_chanting_in_tirumala_temple_mp3_free_download.pdf
    • http://xuvabufoj.pbworks.com/f/dragon_ball_z_budokai_tenkaichi_3_ps2_rom_espaol.pdf
    • http://lovixov.pbworks.com/w/file/fetch/144868494/93828805228.pdf
    • http://tubekikewabi.pbworks.com/f/supercheap_auto_ipswich_trading_hours.pdf
    • http://ronakiko.pbworks.com/w/file/fetch/144552153/cbse_class_7_maths_ratio_and_proportion_worksheets_with_answers.pdf
    • http://vogituvu.pbworks.com/f/what_is_a_two_group_pretest_posttest_design.pdf
    • http://furalagaposu.pbworks.com/f/bofujepifufepaneko.pdf
    • http://ruwomodanom.pbworks.com/f/dunkin_donuts_iced_cappuccino_nutrition_facts.pdf
    • http://bujolajoxek.pbworks.com/f/bupeseg.pdf
    • http://gonumutat.pbworks.com/w/file/fetch/144556584/mental_maths_tricks.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc41.bin
99e57b4478a190101e659e08200ee7aa5f99ae419b3d93a47a3cc0807b3f41d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC41 5348 bytes

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