Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b62e9c8a52f9b7a…

MALICIOUS

PDF

84.7 KB Created: 2021-03-11 05:23:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: c47032d7514675f03293e2ac057d03fd SHA-1: eed694d0fb42e181ab51c9c647ca8a23aa920ead SHA-256: 1b62e9c8a52f9b7af904b6c6c7d952ae2e833e8e7ce8e24c3d0c44d12c5970ec
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs that redirect to potentially malicious domains, disguised as search results. Heuristics indicate it's a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and embedded URIs strongly suggest an attempt to redirect the user to a malicious site, likely for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • 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://xezojetit.ru/award?keyword=english+to+bengali+meaning+pdf PDF link annotation
    • http://wumomotetidofe.getenjoyment.net/zisokisumojosejila.pdfIn PDF document text
    • https://xikaxuroloxo.weebly.com/uploads/1/3/1/4/131406092/gumififori.pdfIn PDF document text
    • http://vowitufafuzebil.scienceontheweb.net/navien_tankless_water_heaters_reviews.pdfIn PDF document text
    • http://dimax-matrasy.ru/blackberry_classic_2020_buypv9sm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477637/normal_5ffc17a0d09d9.pdfIn PDF document text
    • http://rivalo130.com/is_network_plus_harder_than_securitywawqa.pdfIn PDF document text
    • http://fuwijumazawad.mywebcommunity.org/number_theory_definition.pdfIn PDF document text
    • http://about-fb-support.com/adding_and_subtracting_polynomials_activity_24_answers321p5.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/basic_electronics_books_in_bengali.pdfIn PDF document text
    • https://sizadefo.weebly.com/uploads/1/3/4/3/134381744/8465939.pdfIn PDF document text
    • http://faripofijukevom.mywebcommunity.org/difatoserekefisagege.pdfIn PDF document text
    • http://bitalotava.scienceontheweb.net/mubakerosuted.pdfIn PDF document text
    • http://egrn-order.online/lexusawuwelufenizewovaneleuia0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489028/normal_5fccf395e83ba.pdfIn PDF document text
    • https://tilotifibow.weebly.com/uploads/1/3/4/5/134505855/858b2df.pdfIn PDF document text
    • http://ganitigusawev.mygamesonline.org/is_bread_dairy_free.pdfIn PDF document text
    • https://fowawuxubave.weebly.com/uploads/1/3/4/7/134759807/kupofixiwoxuxuzemose.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nizowozutagele.atwebpages.com/endlessly_beautiful.pdfIn PDF document text
    • https://14535e1a-360a-4d01-a655-fa33e115c80e.filesusr.com/ugd/b222ea_cf97c52f269c4f94a374559c8a8ade98.pdf?index=trueIn PDF document text
    • https://35e1cc1d-5f6c-4a41-9b1b-b9ae8dddc97a.filesusr.com/ugd/351eee_2ab5ec2e17394b75bb0493b9fcb5bdf0.pdf?index=trueIn PDF document text
    • http://vidugozu.atwebpages.com/sagiwikelunufokesedawita.pdfIn PDF document text
    • https://dd3528e8-ded0-4753-843e-0d3cb9f542e7.filesusr.com/ugd/4d6844_4fb522af7acc404ca981e439d6b95833.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AD 5456 bytes
SHA-256: f70e94b90f7db2e1e604820c4ea5ca0be15d7ceffef8460b4460f238cb0e11d2
font_01_sfnt_off0000fc17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC17 12004 bytes
SHA-256: bc34d3f958370fb3dca4f33c8f24c8c56606f1cbbeda6a6b1664178491272cc2
font_02_sfnt_off000120e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120E5 10540 bytes
SHA-256: 9b23dbcbfeaaec70d2f871d48c1d2af8c38e75b7bd8e6d6133a5198be8d4c295