Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb4317f5a28bd5c…

MALICIOUS

PDF

82.5 KB Created: 2021-05-18 11:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: dbdf9ac2a97b464b307fee8f25053d8d SHA-1: 12e41595eaf65e02e42ec9a6895ebf979d0faa2c SHA-256: edb4317f5a28bd5c63f8370af6bc9e3fce9cbdcf8062aa6bf4a94047c898e5f0
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 0.9996

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://druttle.ru/wb?keyword=taco%20bell%20nacho%20box%20calorie%20count PDF link annotation
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/5227239.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505358/normal_5fe9a24779a94.pdfIn PDF document text
    • https://sifuparara.weebly.com/uploads/1/3/4/3/134352995/ed9cbec13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421460/normal_60216af6a0b85.pdfIn PDF document text
    • https://gujibukogise.weebly.com/uploads/1/3/1/3/131380045/gewolem-tipuwupowok.pdfIn PDF document text
    • http://gavazode.22web.org/biografia_de_augusto_monterroso.pdfIn PDF document text
    • http://gedawirij.66ghz.com/23843259509.pdfIn PDF document text
    • https://pudizixu.weebly.com/uploads/1/3/4/9/134901204/vurabusafebutonakiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477138/normal_6022e96f75198.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393016/normal_5fe27447bb907.pdfIn PDF document text
    • https://buzufurabobozu.weebly.com/uploads/1/3/5/3/135304208/gefovedepevu-lagoxoxulagima.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384470/normal_605437441f379.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nevenapitafopo.epizy.com/lemulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aef17dab-7604-4390-9f7a-9c86be0ff66e/a_christmas_carol_animated_film_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/60509662492.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64d5a5c0-ab47-47fc-a5fd-57bc193a6d60/what_are_the_roles_and_responsibilities_of_a_health__safety_officer.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/who_owns_bryant_hvac.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/48663497429.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d44c853-f5a7-434a-a6fa-b0867c49fc4f/41131278848.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/chrome_full_version_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b02c81b-b1d6-4531-b5d6-30644a94d27e/when_can_you_use_ergo_360_without_infant_insert.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94f74051-3476-47b7-8fe7-4e0feb5e7a2e/how_to_write_a_statement_under_penalty_of_perjury.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_off0001085f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085F 4864 bytes
SHA-256: 85c79d4d266e9e3f60ebdd142b9804d820f66b057d5a1e4c4a2c1df91d48e625
font_01_sfnt_off000118e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118E3 10344 bytes
SHA-256: 852675413d91e9ec9a6e656f608345c78835a164abb5ef7d90c1a7301395445d

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