Malicious PDF — malware analysis report

Static analysis result for SHA-256 06ee8d7dc0793e37…

MALICIOUS

PDF

79.4 KB Created: 2021-03-28 19:30:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b95157dc262ad4a1d780284cac98df2a SHA-1: 92c1f6ce7190a03c55ce1373a0917b08845bb597 SHA-256: 06ee8d7dc0793e370003ed8a75b7160511ddb9d4fb37e14ea05e5e31cb3ffeee
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://golowaki.ru/strik?utm_term=where+is+the+speed+sensor+located+on+a+4l60e+transmission PDF link annotation
    • https://takazomidiki.weebly.com/uploads/1/3/4/4/134470224/fanivezoniliwi.pdfIn PDF document text
    • http://palupalukagu.mygamesonline.org/c_diff_diet.pdfIn PDF document text
    • http://yandex-delivery.cc/the_waverly_inn_manhattanrmvk4.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/CgjhjO3/buy_warrior_cats_books_online.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/ihsgiTm/farmville_2_tropic_escape_online.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/crhf3WM/poutine_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/gd7gcjg/wobudiw.pdfIn PDF document text
    • http://zavodtriumf.com/7755528744bp3gk.pdfIn PDF document text
    • https://zunukewonodej.weebly.com/uploads/1/3/1/4/131453615/8ee780.pdfIn PDF document text
    • http://pizabalex.22web.org/spondylitis_adalah.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwosexed/SDZL7ia/ralphs_delivery_near_me.pdfIn PDF document text
    • http://regvoolkim.website/compare_and_contrast_essay_structure_examplem59xm.pdfIn PDF document text
    • https://cdn.sqhk.co/depivuni/eDxjjjj/27093541943.pdfIn PDF document text
    • http://ygrash.website/admin_assistant_letter_of_recommendation_for_administrative_assistantu161h.pdfIn PDF document text
    • https://foworagajiwodim.weebly.com/uploads/1/3/0/9/130969946/vaxezi.pdfIn PDF document text
    • http://vitetiw.getenjoyment.net/adobe_flash_cs6_animation_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/kujaruwajovi/idqbyBm/subway_train_boy_runner_3d_game_download.pdfIn PDF document text
    • https://rabifitirigi.weebly.com/uploads/1/3/0/7/130739094/sifikapasemitib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://parijuxurumemew.epizy.com/how_do_i_add_more_than_2_buttons_on_wix.pdfIn PDF document text
    • http://wefulipov.epizy.com/cds_2020_question_paper_with_answer.pdfIn PDF document text
    • http://safefimij.epizy.com/liwevifeme.pdfIn PDF document text
    • http://zodiripek.myartsonline.com/30471063806.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF596 5712 bytes
SHA-256: 92f2816a7d47770e2eec1bea93088b748350e7fe7cb9738d1b03400d5a41f573
font_01_sfnt_off000108f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F3 10848 bytes
SHA-256: 4a923469b50ec30db7d5bfc6a55be85d1f1bceb0abf43e42818f26803d763ce7

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