Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d7ae31ed78a7e58…

MALICIOUS

PDF

75.5 KB Created: 2021-03-25 07:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ea14c2a4cf2a6e2c458ba64c1dd2027c SHA-1: 574d102e9052d5ef726f002f55c7b98f7fab5656 SHA-256: 2d7ae31ed78a7e587d4860923cd4d54a78fe54e728ad42f7ec586b592c7974ee
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 0.9999

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://gimoguvi.ru/strik?utm_term=multivariate+analysis+definition PDF link annotation
    • http://handler-autoscout24.com/how_to_become_a_real_estate_agent_in_ohiooifkr.pdfIn PDF document text
    • http://nomenowunesazoz.scienceontheweb.net/roomba_530_charging_error_3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402297/normal_6050d37503078.pdfIn PDF document text
    • http://lejunuzegakikuv.mypressonline.com/6807379427.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491436/normal_6037b2ab15a51.pdfIn PDF document text
    • http://naturwows.space/voltas_ac_remote_gz-50gb-e1hgss8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496014/normal_605a0d7f36755.pdfIn PDF document text
    • http://gonunimob.iblogger.org/top_10_punjabi_movies_websites.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423454/normal_603cac19a73d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370265/normal_5fe0a5a86f1e7.pdfIn PDF document text
    • http://tezijexipilimo.getenjoyment.net/36105684804.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rogomore.myartsonline.com/58706199715.pdfIn PDF document text
    • http://jizivaj.epizy.com/pride_and_prejudice_1980_full_cast.pdfIn PDF document text
    • http://bawexoji.rf.gd/wabinejakunoxuvuzozubi.pdfIn PDF document text
    • http://viwapuzajor.epizy.com/checkpoint_vpn_administration_guide_r77.pdfIn PDF document text
    • http://dozopum.rf.gd/31170233704.pdfIn PDF document text
    • http://tasowivi.epizy.com/77853507731.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_off0000e890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE890 5068 bytes
SHA-256: b6495fd3ee11abac3ff5b2b06517e34131d95ef71f7e0e87bede736971c125aa
font_01_sfnt_off0000f9f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F5 10988 bytes
SHA-256: a3d5f2f174618637c31fd30d88ad1f2e589dd2e68f10d11c883ce43b858eabb1

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