Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a62286bb6efeaba…

MALICIOUS

PDF

72.8 KB Created: 2021-03-16 20:43:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3127ada4820f41fd1abf2948c4d5032b SHA-1: 51f02b5050c6fcf437456c8951f5931a715b64f7 SHA-256: 2a62286bb6efeabac31f59924a145414f08c9dc5458d4511cd896074561dbe8c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that appears to be a search result lure. While no scripts were extracted, the presence of external URIs and the nature of the heuristics suggest a phishing attempt designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=male+tunic+definition
    • http://lezigovedavide.getenjoyment.net/lugodebobikubafijuponub.pdf
    • https://cdn-cms.f-static.net/uploads/4425737/normal_5fd0ded5b45f2.pdf
    • http://fulukegoror.getenjoyment.net/septoplastia_e_turbinectomia.pdf
    • http://naturfresh.space/85265136758immno.pdf
    • http://siwosupegejolop.medianewsonline.com/toxisodujopisikemofev.pdf
    • https://cdn-cms.f-static.net/uploads/4387939/normal_600d244d39860.pdf
    • https://cdn-cms.f-static.net/uploads/4375503/normal_60471d93af87e.pdf
    • http://carbackseat.site/hard_sayings_of_jesus_meaningevp53.pdf
    • https://static.s123-cdn-static.com/uploads/4412762/normal_5fc8e01dce25b.pdf
    • http://jijimaxugixu.22web.org/347923947.pdf
    • http://metoxegid.mygamesonline.org/91621091084.pdf
    • https://cdn-cms.f-static.net/uploads/4449417/normal_5fd27fc4bacf8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kefodek/653152934.pdf
    • https://s3.amazonaws.com/ziwuvijevo/64280547941.pdf
    • https://s3.amazonaws.com/buponuwebi/nagupipe.pdf
    • https://s3.amazonaws.com/sukobogixe/deep_sea_fishing_runescape_guide.pdf
    • https://s3.amazonaws.com/lulelepese/sitemap_template_adobe_xd.pdf
    • https://s3.amazonaws.com/magapeguwabe/ignition_coil_wiring_diagram.pdf
    • https://s3.amazonaws.com/farokof/24175053940.pdf
    • https://s3.amazonaws.com/wavunot/niker.pdf
    • http://luzutajezilako.rf.gd/85521217772.pdf
    • http://dezobod.onlinewebshop.net/actividades_de_escritura_para_nios_de_segundo_grado_de_primaria.pdf
    • https://s3.amazonaws.com/divelikubapiwaj/logo_quiz_world_answers_level_15.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0de.bin
0e43fec1c3f09fd9e218c040724b902c84dc55f6a587c7da7550d568a2f33eb7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DE 4744 bytes
font_01_sfnt_off0000f128.bin
b49c2ca8bec9cfca0589a260fa2b7ce2c95427a65b283f1ddd87076568df19e3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF128 10944 bytes