Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc3c2e36b89176e…

MALICIOUS

PDF

82.6 KB Created: 2021-03-11 15:01:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 57d2bcacac100b1f655fd80775000b04 SHA-1: c0d2a10a6fc516991763bf85c113dbaba517930b SHA-256: 9cc3c2e36b89176e9388d9bed982c8376398e907f4f0d7970be0afad6a9c7b3d
246 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, specifically flagged for brand-impersonation credential phishing. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to obscure the ultimate destination. One prominent URL, https://mezovuduw.ru/wix?keyword=elec+security+camera+manual, is present, and another lure uses the Amazon brand, directing users to a PDF hosted on weebly.com.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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 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://levarimabogi.weebly.com/uploads/1/3/5/3/135328943/703783.pdf.
  • 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.
  • 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=elec+security+camera+manual PDF link annotation
    • https://levarimabogi.weebly.com/uploads/1/3/5/3/135328943/703783.pdfIn PDF document text
    • http://wacc-cat.org/how_to_make_sonic_cookie_dough_blastffeuf.pdfIn PDF document text
    • https://roxagidu.weebly.com/uploads/1/3/4/7/134748987/021e027647bb.pdfIn PDF document text
    • https://lewugudufe.weebly.com/uploads/1/3/4/6/134668986/sulebubobel_wenomivumari_donifosugugud.pdfIn PDF document text
    • http://openplafond.xyz/rodifabizoxe3bjvb.pdfIn PDF document text
    • http://kanshoper.site/cg_song_dj_remix_2018p8xv2.pdfIn PDF document text
    • https://kuxodebareku.weebly.com/uploads/1/3/4/0/134042390/sijejawezegusojotefo.pdfIn PDF document text
    • https://kowalarezanir.weebly.com/uploads/1/3/1/4/131438161/faweped-zakuriguv-kegonugosinud-xiwuru.pdfIn PDF document text
    • https://fupobemoxu.weebly.com/uploads/1/3/4/6/134669325/manomululexev.pdfIn PDF document text
    • https://zijisejimalunu.weebly.com/uploads/1/3/4/4/134495917/vozix.pdfIn PDF document text
    • http://lnstagram-blue-badge-form.com/fezobewevtbces.pdfIn PDF document text
    • https://mufajagirudul.weebly.com/uploads/1/3/1/4/131452858/difusazadolos.pdfIn PDF document text
    • https://dojoxokixen.weebly.com/uploads/1/3/4/8/134878929/rejipapipu.pdfIn PDF document text
    • https://nalokulomegeze.weebly.com/uploads/1/3/4/7/134758193/7511269.pdfIn PDF document text
    • http://eurofamily.pro/how_to_pray_for_a_birthday_person1wvhy.pdfIn PDF document text
    • http://ilkertr.shop/3ds_bios_download_rarqkmve.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b913155d-2712-4fd4-bcc6-651970a8c456.filesusr.com/ugd/e39924_f96795056e4f4ff0a06d5e499df576df.pdf?index=trueIn PDF document text
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_17ac583b6fcf41839d183258ab7abb7f.pdf?index=trueIn PDF document text
    • https://e6676b24-921d-4f57-8fca-beda98688f3c.filesusr.com/ugd/144d27_4eacb89ed6924da6a292bbd95d000f5e.pdf?index=trueIn PDF document text
    • https://f4a80ce2-0a24-44e2-aff7-13c87a434ee9.filesusr.com/ugd/ace063_b01eda1d24264e70a7f526960117b919.pdf?index=trueIn PDF document text
    • https://7b806e58-2e0f-4c22-b5e1-e0f71c4d6e86.filesusr.com/ugd/8da65f_0bf5fe323f29411ab852beb423f5b653.pdf?index=trueIn PDF document text
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_47f9775b73fc43b19e106c822f98f376.pdf?index=trueIn PDF document text
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_0ec6fb9796d247f18aeccbdd67b41593.pdf?index=trueIn PDF document text
    • https://c145ee04-3c3b-4786-8b94-e0511401b322.filesusr.com/ugd/de65f7_9eb2b467aac24d9690fa0a47a063cc66.pdf?index=trueIn PDF document text
    • https://9579f988-9383-433c-acf3-5fff76e0c882.filesusr.com/ugd/191a6d_fac8a13c07f64cc297507fc8f66bf52d.pdf?index=trueIn 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_off00010862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10862 5004 bytes
SHA-256: 380c26a1c8751c4abcc7492ef9195d958bf66e6fc0da66a8836588e607a040a1
font_01_sfnt_off00011959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11959 10348 bytes
SHA-256: b972accbb8216fec2c023ab14ea3819e27c193c7a3e89ef8a83e20a6274a5769