Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a166ae332c580f6…

MALICIOUS

PDF

77.9 KB Created: 2021-02-14 05:29:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7aa7eb4fa1cdd7bce69a2460c3a99eb5 SHA-1: 2727da7f0bcc5fadc57392267f844cfab13a03f4 SHA-256: 4a166ae332c580f6dc4e7837a3fffed68935d973ab19b6b4672c27fbf8159ee9
192 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier. It contains embedded links that redirect to known malicious infrastructure, indicating a phishing or malware distribution attempt. The 'SE_INVOICE_LURE' heuristic suggests the document's content is designed to trick the user into clicking these malicious links, likely to download a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://crophysi.ru/wb?keyword=sistem%20informasi%20akuntansi%20penjualan%20menurut%20para%20ahli In PDF document text
    • https://cdn.sqhk.co/dedikunakudu/U79z0px/galaxy_invaders_game_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/BNbnaii/wevepolaxa.pdfIn PDF document text
    • http://introdom.ru/trex_handrail_installation_guidegpudb.pdfIn PDF document text
    • http://1xbet-registr.site/kill_shot_picture_meaning9w294.pdfIn PDF document text
    • http://raffle.website/15803219591wyvc6.pdfIn PDF document text
    • http://shopsmmv.site/consecutive_integers_worksheet_with_answersk0wok.pdfIn PDF document text
    • http://nerroba.info/fumin8f6vg.pdfIn PDF document text
    • http://italy-small.space/excel_template_google_analytics9oqlk.pdfIn PDF document text
    • http://5coupon.info/tango_jalousie_sheet_music_violin_freetzrbv.pdfIn PDF document text
    • http://hotel-engels.ru/xisovawabupoxewaledunion9jy.pdfIn PDF document text
    • http://tevfikyuce.xyz/tofesafo55z3z.pdfIn PDF document text
    • http://ejinaya.com/45607959378yfv6m.pdfIn PDF document text
    • http://top-shop-store.website/kajizotatanepidofajaczndr.pdfIn PDF document text
    • http://pexaxasub.iblogger.org/animated_cartoon_gif.pdfIn PDF document text
    • https://cdn.sqhk.co/wafabojunawa/rZMg6jg/how_to_do_smart_diagnosis_on_lg_washer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/goldiam_international_ltd_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/call_of_duty_garena_apk.pdfIn PDF document text
    • http://gijuvaginitawaz.epizy.com/77623385216.pdfIn PDF document text
    • http://dikewovob.epizy.com/report_phishing_scams_to_bt.pdfIn PDF document text
    • http://rozofamano.epizy.com/fepakejulipekim.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_off0000f400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF400 5384 bytes
SHA-256: e64ddfebfdeaf33082cb881f1720d5e3d3c36a8d0b8ac3a27f63320481c363ad
font_01_sfnt_off00010629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10629 10524 bytes
SHA-256: 3f6767a90641af4df7a66a72e038e4c86d90e328edfcc5e501ea646622277da2

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