Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a7edbe439ea7b2b…

MALICIOUS

PDF

76.7 KB Created: 2021-03-02 19:27:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 280fc7d8230d5465899dbfe54ad9125b SHA-1: d32765ba10adc6172fa757b95a36363ea19dd605 SHA-256: 9a7edbe439ea7b2b32bbd68c1ce368cf36f95e547ea11fed55ffd95e57e32cba
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains multiple embedded URLs, including one that appears to be a link farm hosted on disposable domains, and another that is directly linked to a potential second-stage payload. The presence of a 'download button' lure and a callback phishing pretext further indicates a malicious intent to trick the user into downloading or interacting with harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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.
  • 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
  • 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://xajibur.ru/123?utm_term=schedule+cdl+permit+test+texas PDF link annotation
    • http://vorgazme.com/fesegemevabopitrjab.pdfIn PDF document text
    • https://zevofukuje.weebly.com/uploads/1/3/4/5/134585027/8751a3e0edf.pdfIn PDF document text
    • https://xelopapet.weebly.com/uploads/1/3/0/7/130775154/4514528.pdfIn PDF document text
    • http://pumeputokamodo.22web.org/how_to_read_a_baby_heartbeat_monitor.pdfIn PDF document text
    • http://kofibilo.22web.org/leyendas_y_rimas_de_becquer_vicens_vives_resumen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449775/normal_601a3d3468a33.pdfIn PDF document text
    • http://numupizor.22web.org/how_does_paying_dividends_affect_balance_sheet.pdfIn PDF document text
    • http://bred-enligne.com/pugigisokekamalevonefawk9ge2.pdfIn PDF document text
    • http://probkin34.xyz/writing_in_anthropology_a_brief_guidevf4wb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403429/normal_603e40f6ca4e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425514/normal_5ff8a3429ad92.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497368/normal_5fdfc78ed6b81.pdfIn PDF document text
    • http://tasefile.22web.org/rijuwa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kulixuvomewono.epizy.com/sovadukesunosoze.pdfIn PDF document text
    • http://xuwuwum.epizy.com/nipakavobosakupoj.pdfIn PDF document text
    • http://zemesimeboxi.epizy.com/3621205236.pdfIn PDF document text
    • http://finubebaguj.rf.gd/gamp_5_guidelines_categories.pdfIn PDF document text
    • http://nejimafalun.onlinewebshop.net/what_does_pst_mean_on_cox_cable_box.pdfIn PDF document text
    • http://bogiginilaxano.epizy.com/does_audacity_work_on_mac_catalina.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_off0000ec91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC91 5484 bytes
SHA-256: deb9f9cbee7534efd2c1ff5443a46c173c7661a58137b8ccfd3a30cf7cf05934
font_01_sfnt_off0000ff0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0E 11624 bytes
SHA-256: e360107c486aca96df4cc08ae070f265af98b4099b3efcd894414a370f22c141

Open this report in the interactive analyzer, or submit your own file for analysis.