Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ce38c68e4c111e…

MALICIOUS

PDF

242.3 KB Created: 2021-04-06 00:02:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 01e9343aa27f7517bf0ca49822083f98 SHA-1: c0c44c5fa1b0ad3c9dfc869512defcb70d197c8a SHA-256: 76ce38c68e4c111e88d22d18215a550ab43f73962c7abf593aa42ed44c9419e5
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link T1059.007 JavaScript

This PDF document exhibits multiple indicators of a phishing attack. It impersonates Gmail and uses urgency lures, such as 'account will be terminated', to trick users into clicking malicious links. The primary malicious link identified is https://mezovuduw.ru/wix?keyword=i+need+a+blank+atm+card+2020+post+comment, which is likely used to deliver a secondary payload or redirect to a credential harvesting page. The presence of PDF_URI and SE_BRAND_CREDENTIAL_PHISH heuristics strongly supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8957

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://jotabaputeja.weebly.com/uploads/1/3/5/3/135350690/4228075.pdf.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://mezovuduw.ru/wix?keyword=i+need+a+blank+atm+card+2020+post+comment PDF link annotation
    • http://static-get.top/golesovetq1o2a.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://bebodepana.22web.org/vusipadarobuveb.pdfIn PDF document text
    • http://idealslim-ordina.site/50714761030a2w69.pdfIn PDF document text
    • https://jotabaputeja.weebly.com/uploads/1/3/5/3/135350690/4228075.pdfIn PDF document text
    • https://zujuwaxi.weebly.com/uploads/1/3/5/3/135307850/9a6057cc9bfbe88.pdfIn PDF document text
    • https://pewatusikowago.weebly.com/uploads/1/3/2/6/132683224/xudukejer.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/60506194153.pdfIn PDF document text
    • http://mitedujonajezed.scienceontheweb.net/because_i_could_not_stop_for_death_questions.pdfIn PDF document text
    • https://nopetozu.weebly.com/uploads/1/3/4/5/134507327/terozasutafi-novumozi-zubabusigusotog-kixinituvefop.pdfIn PDF document text
    • http://hairsprof.ru/nikon_d40_price_in_bangladesh_2019oprwz.pdfIn PDF document text
    • http://soinjaga.ru/analytic_number_theory_problem_bookdkkkr.pdfIn PDF document text
    • https://lufojegixibebaz.weebly.com/uploads/1/3/1/4/131407324/loropuviwujaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d70d3bd4-0cd0-4932-bc2d-65c476128a5e/john_deere_l100_brake_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/the_color_of_magic_book_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44d58e8a-d37f-439e-9fc1-e5bbf581b750/24260705542.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/livro_de_agrometeorologia.pdfIn PDF document text
    • http://sinusisokopex.atwebpages.com/95054428128.pdfIn PDF document text
    • http://vaxomuterok.epizy.com/40335455308.pdfIn PDF document text
    • http://badamowafe.onlinewebshop.net/international_business_strategy_management_and_the_new_realities_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/46160108151.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/78635846182.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/wumotipuvevaxoziw.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00034125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34125 6960 bytes
SHA-256: 526f484e3160199f67607d532ad2bc05ff62a10819a4b114ba8a4d406a6aeaec
font_01_sfnt_off000352c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x352C4 5636 bytes
SHA-256: 87ca9d333ec816f7489bff7190c9d24a09757c5c884e394f304eafd4f2f77657
font_02_sfnt_off0003658c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3658C 6340 bytes
SHA-256: b5a16e0e27fd7ec1e5233468ec2116f1103745af8dbc026963c8a600946cd635
font_03_sfnt_off0003751e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3751E 14012 bytes
SHA-256: a7997fd915ea944f7da90c5df238ab3030505bd6dbeb2e7e1032476ca1131d7e
font_04_sfnt_off0003a2c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A2C0 16464 bytes
SHA-256: a8576b5090baa533b6c91bb973fdc2bb141975de5ae950ec6e061388d321a2e7

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