Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1a5469cc3e29170…

MALICIOUS

PDF

76.1 KB Created: 2021-03-04 18:51:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b401f5ffa457292abde2156ceb2fb489 SHA-1: ffaf4a59b249730a1277741b673a1838ae10bbbb SHA-256: b1a5469cc3e2917026ba619901a3bfe2c4f39e3b560409d5d105b0166827a3a2
134 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links pointing to various domains, many of which are hosted on disposable or suspicious platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://botokaw.ru/wix?keyword=pixel+gun+3d+online+hack+tool PDF link annotation
    • https://zidadosivifaju.weebly.com/uploads/1/3/0/7/130775619/5daf3a12849a27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380083/normal_601391ed52506.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/63747818911.pdfIn PDF document text
    • https://tokafiwunan.weebly.com/uploads/1/3/4/3/134372509/3726587.pdfIn PDF document text
    • http://gakukuketisalum.scienceontheweb.net/gejakun.pdfIn PDF document text
    • https://cdn.sqhk.co/pizokifuxe/ijwieJs/dagosegejotenotuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455183/normal_60344468555c8.pdfIn PDF document text
    • https://cdn.sqhk.co/xujurovemu/jhcWRDb/12476811741.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379837/normal_602c460093b48.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/53011762109.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379387/normal_5fc62412d1b6b.pdfIn PDF document text
    • https://jekodijup.weebly.com/uploads/1/3/4/4/134490718/rusupik-zixokipol-libirenodoxen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393506/normal_5ffd8026b8356.pdfIn PDF document text
    • https://cdn.sqhk.co/wagomito/gesscA7/what_is_my_smtp_server_name_for_outlook.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379500/normal_603919567cb3e.pdfIn PDF document text
    • https://cdn.sqhk.co/defegitip/diayiih/fiduvofova.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380528/normal_60162546211be.pdfIn PDF document text
    • https://ditixalopu.weebly.com/uploads/1/3/1/4/131410538/2767837.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zitasixan.atwebpages.com/how_to_reset_my_samsung_top_load_washer.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/simcity_4_deluxe_edition_mac_cheats.pdfIn PDF document text
    • http://ligoroxenafof.atwebpages.com/14283093831.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_off0000edf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF8 5224 bytes
SHA-256: 29e1c678b9b69f663923ab89b854ab1e9fb6f2247e960c746e28a39b5467d804
font_01_sfnt_off0000ffc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC9 10236 bytes
SHA-256: 43f490e26f3e0611b8fbacbe8419104f46c8867da3c5365ed0529c936e42a6ac

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