Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3eabe6fc4814ce7…

MALICIOUS

PDF

90.9 KB Created: 2021-04-10 10:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 41f7b7fd3f1e468e9985c9091c9370e7 SHA-1: db81440efa8308b59c2cbe77af90de36a2e9b0e0 SHA-256: e3eabe6fc4814ce759bdd16dc2df2fc2556b68d7e5461fda0d8aec1499fb7dec
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL identified as a potential distribution point for malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed as a link farm on disposable hosting, further supporting a malicious intent. ClamAV detection and ML classification strongly suggest malicious content, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/strik?utm_term=rival+gc8250+soft+serve+ice+cream+maker+recipes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426675/normal_6023420cdc466.pdfIn PDF document text
    • http://bisujidaruxu.iblogger.org/72376123896.pdfIn PDF document text
    • http://lazategomid.scienceontheweb.net/xiwep.pdfIn PDF document text
    • http://gawudubigojan.getenjoyment.net/fivarer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452607/normal_5fe25b3bb0b20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387424/normal_606b9b2717cfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486374/normal_6045e9e4e9c34.pdfIn PDF document text
    • http://welitizenowem.mywebcommunity.org/donojejaligewevago.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://naxokagad.epizy.com/miracle_box_crack_latest_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9d206d8-1984-408d-856a-6390ec01d22b/can_guys_use_heart_emojis.pdfIn PDF document text
    • http://wetafemef.epizy.com/financial_administration_act.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/25881511144.pdfIn PDF document text
    • http://xasibaj.epizy.com/business_school_book_in_gujarati.pdfIn PDF document text
    • http://fikelamizogu.myartsonline.com/55628327116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8d2e7fb-c734-439b-968f-f7fe90e09f3b/what_is_the_example_of_resonance_structure.pdfIn PDF document text
    • http://dakunexafabeve.epizy.com/sekevilupukoki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/313370c1-ae9a-4679-b5e3-1cc9de3a7bdb/mosekabupopubijed.pdfIn PDF document text
    • http://puwixatokido.epizy.com/80156047685.pdfIn PDF document text
    • http://golinab.rf.gd/14531819807.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/how_to_listen_effectively.pdfIn PDF document text
    • http://nivajunupoz.epizy.com/bakteri_bacillus_subtilis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/907e4e97-919e-4434-939a-32455d00963b/70815086442.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_off00012365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12365 6056 bytes
SHA-256: 18fb71ea964d9f98b52042225eafdf5cd907b1472fbafb9f3e249ddcc0e4be73
font_01_sfnt_off00013803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13803 11136 bytes
SHA-256: 395648ef580196d88c363f415e1a87e29ec70b3bfc07f23d5583aa408709ad89

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