Malicious PDF — malware analysis report

Static analysis result for SHA-256 206d31b9d497a2e7…

MALICIOUS

PDF

78.3 KB Created: 2021-04-07 02:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 99ef14e908f2c4977d2ae0a62727a3ac SHA-1: 5a097b26f93060727196db6ea5819bd4d8c19f10 SHA-256: 206d31b9d497a2e7d9c037cc7b00e7d0e094eace202efd74deee1262391f1351
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • 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://dafemum.ru/award?keyword=real+estate+investment+business+plan+sample+pdf PDF link annotation
    • https://gorasugaki.weebly.com/uploads/1/3/4/7/134766712/winulajigivu-tafijo-fedoxaluvu-lidope.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472221/normal_5feccfd944e8a.pdfIn PDF document text
    • http://wivevadevenumet.mywebcommunity.org/administrao_de_hotelaria_hospitalar.pdfIn PDF document text
    • http://rogijowop.sportsontheweb.net/18807728894.pdfIn PDF document text
    • http://vorakumezaxof.mygamesonline.org/starbucks_almond_milk_nutrition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491450/normal_601d800e0d203.pdfIn PDF document text
    • http://zoxuruje.sportsontheweb.net/89007341875.pdfIn PDF document text
    • https://zibesotisudub.weebly.com/uploads/1/3/5/9/135996238/6263435.pdfIn PDF document text
    • https://pevidutapare.weebly.com/uploads/1/3/0/7/130740538/8928184.pdfIn PDF document text
    • https://nasuxixogidipan.weebly.com/uploads/1/3/4/7/134701521/8427223.pdfIn PDF document text
    • http://nitafibejuze.mygamesonline.org/96887374278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366959/normal_5fd83cd8944df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_60564b609c01b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5785b580-3d71-4c60-81d2-5770430ef482/nyc_tlc_inspector_exam.pdfIn PDF document text
    • http://voruluju.epizy.com/79729400609.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68220261-43b0-4e11-8d5b-d7b552e31547/puluzedolemerenuzisi.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/kibibafibedijopolim.pdfIn PDF document text
    • http://wivefexefanit.epizy.com/jidezobubuxakesop.pdfIn PDF document text
    • http://lodumojokexiku.onlinewebshop.net/hernia_diafragmatica_en_caninos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df801d0a-86b2-4123-961b-0315231dc653/28945115701.pdfIn PDF document text
    • http://biwodonugawodil.rf.gd/4787491985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7e7f1d5-beab-4c57-80f3-9ebfb12254a4/vuwegewujerivelutija.pdfIn PDF document text
    • http://nerezusilanake.atwebpages.com/printable_periodic_table_of_elements_with_everything_labeled.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_off0000f43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF43D 5296 bytes
SHA-256: 6545288db6a51d17cb6d406a34801a8b343d652fe270864d705ffeacec3c1957
font_01_sfnt_off00010638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10638 11192 bytes
SHA-256: 684ea8289e8eb2b57fc55df1faed3ab51fa29e9f03c43e6e9de3cfa11d7f80b2

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