Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e8f0c9bafb5cbd1…

MALICIOUS

PDF

80.5 KB Created: 2020-12-23 02:27:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: d37faf4961548d12c0fe961bc174179f SHA-1: d25bd876cae9623d631ef31269df734e09a455e0 SHA-256: 0e8f0c9bafb5cbd18a8bb5d755ce2efc530e0b4448a7833a3256506454fd2e8d
322 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file is identified as malicious by multiple heuristics, including brand impersonation for credential phishing (UPS) and redirection to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to a technical issue ('Rust not working on geforce now'), likely a lure. The embedded URLs point to a malicious redirector and a Weebly hosted PDF, indicating a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://mulevemi.weebly.com/uploads/1/3/4/7/134754511/96230eed41.pdf.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/strik?utm_term=rust+not+working+on+geforce+now In PDF document text
    • https://mulevemi.weebly.com/uploads/1/3/4/7/134754511/96230eed41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366620/normal_5f8914196cf87.pdfIn PDF document text
    • https://lofusomibebez.weebly.com/uploads/1/3/2/7/132740423/lagigoduj-munugifo-tevabije-komok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd06a33fdc31513a1101c8/1606223523350/ggplot_pie_chart_alternatives.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27e6e3398ff7515381371/t/5fcba7f8190ee82df8e14994/1607182328338/zizaxosesotewi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc181a368612547ed627098/t/5fc55d223c02f22b9dbf9ede/1606769956012/time_flies_when_youre_having_fun_origin.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/strona_bierna_angielski_zadania.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/nero_star_smart.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/cfia_import_permit_form.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/n_ocular_micrometer_would_be_useful.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/26490828019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/996add3a-a5ec-452e-a609-8e8172ca0ee7/stevie_nicks_i_can_t_wait.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/free_eclipse_for_linux_mint.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5587827a199023ad2f44a/t/5fcbae6f7ab0f364abb1be22/1607183989668/vibijugomokakeruzov.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF323 2900 bytes
SHA-256: a28fcc4ba65d8171a55e8b87d646ac5d1dd213f66ab2b0026fd39e5ca5d32d1a
font_01_sfnt_off0000fd65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD65 4968 bytes
SHA-256: d42de338370e85dbe8558a40862fd91aceb8999e8056299ff128bf593b3f870b
font_02_sfnt_off00010e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E85 11176 bytes
SHA-256: c500b66393e41a0ec2ec3473ab7078d75dd2d5fde7e37bd638d74ca58b7cb417