Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e161d824440f822…

MALICIOUS

PDF

86.2 KB Created: 2021-03-09 07:53:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 52467c55f984cfeba90d5f74af6fd25e SHA-1: b63010f9c2ce9c918517299b8f82fa1d183a3c3e SHA-256: 1e161d824440f8227edcd16bd2c49ed3a746b2b5c86478879dce01d8b16f25cc
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous external links, many pointing to disposable hosting, indicating a link farm designed for SEO manipulation or phishing. The primary URL suggests a lure for game mod downloads, likely to redirect users to malicious content or phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/wix?keyword=monster+legends+apk+download+mod PDF link annotation
    • https://cdn.sqhk.co/dexediwiboze/kbig111/19835002770.pdfIn PDF document text
    • https://jotowaviroretog.weebly.com/uploads/1/3/4/6/134604658/9159135.pdfIn PDF document text
    • http://zojulosopejozaz.iblogger.org/devisiperaxovufevowo.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/ggAhakD/lixibikuvik.pdfIn PDF document text
    • https://xigujevaw.weebly.com/uploads/1/3/4/7/134701692/zonosadivuxug_wefuv.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/YhhZjiB/21789263150.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/jiwonawipa.pdfIn PDF document text
    • https://vodefuba.weebly.com/uploads/1/3/4/6/134688083/4876352.pdfIn PDF document text
    • http://pazadixokumox.sportsontheweb.net/dell_latitude_e7450_power_connector.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/f848c73e-0ec2-4162-b2d0-b9e2b3c3eefa/jack_reacher_movie_watch_online_free_in_hindi.pdfIn PDF document text
    • http://wazipegemezen.atwebpages.com/pubanoregigiviwu.pdfIn PDF document text
    • http://gagajerenaruvuz.rf.gd/84955818410.pdfIn PDF document text
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_99602111c55442c3a7cb504d5a3ac23c.pdf?index=trueIn PDF document text
    • https://84d51d8d-5932-465a-b044-5d36dace581c.filesusr.com/ugd/98e2de_dac29cdd02f74c22b81cd864d566b48e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/15190f5d-5c2a-4c51-9fb8-eb0bdfe00f38/68879498137.pdfIn PDF document text
    • http://gosefemifav.epizy.com/tawojudovubepifedexezik.pdfIn PDF document text
    • https://78a3f932-2eca-4366-91b9-d52a2f3c5f58.filesusr.com/ugd/a586f9_fe651948beb54ba397a0eff675a8be90.pdf?index=trueIn PDF document text
    • http://tofaveme.epizy.com/17888630656.pdfIn PDF document text
    • http://zasujofimak.epizy.com/letter_worksheets_for_preschool.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE195 6744 bytes
SHA-256: 048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4
font_01_sfnt_off0000f27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27A 5440 bytes
SHA-256: 51447ebce8f373cba4f9f4b3dbf08606575b306f179cb7ea345188cb276a4f9c
font_02_sfnt_off000104fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104FC 4440 bytes
SHA-256: dfa191ac1abd2fe9e1531dee19a3c659e06ab819986d41441fa4c7e0fcfccca9
font_03_sfnt_off000110e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110E2 10644 bytes
SHA-256: c672785e3af5a80e20873ec1196b3e64ca7273752c14d9d6ae2e51442aa70d4e
font_04_sfnt_off00013574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13574 16076 bytes
SHA-256: 3088de61ba4d2b01ab234d84e40a42107c4d30a52b1b9bdaf8961d49da71d313

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