Malicious PDF — malware analysis report

Static analysis result for SHA-256 020c51363ed91965…

MALICIOUS

PDF

71.5 KB Created: 2021-03-28 16:39:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 028617a7703cfa83d13da21b53772a60 SHA-1: 0e6a3ae399b0c7807ffec1b1201f8deb39402228 SHA-256: 020c51363ed9196568287bbe8846ca7a5aebb226d6e60706b78776bc3f739f20
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a lure for downloading a worksheet. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded URLs and the nature of the detection suggest this file is part of a phishing campaign designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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=distance+and+displacement+worksheet+with+answer+key
    • http://5-euro.info/xaximorekexu17wqr.pdf
    • https://cdn-cms.f-static.net/uploads/4414678/normal_602ec343f26f3.pdf
    • https://static.s123-cdn-static.com/uploads/4465935/normal_60035aee9e9ab.pdf
    • https://cdn-cms.f-static.net/uploads/4392664/normal_601836fc86328.pdf
    • https://cdn.sqhk.co/pazakazagoz/Dsihegc/87894788118.pdf
    • https://cdn.sqhk.co/lomekojop/hHHAig9/ralphs_open_late_near_me.pdf
    • http://xezixaz.getenjoyment.net/93251605930.pdf
    • https://rupogasonewu.weebly.com/uploads/1/3/4/6/134653860/f494c1f.pdf
    • http://doorstepcomputers.com/who_is_the_highwayman_poem_based_onkmfcw.pdf
    • https://cdn.sqhk.co/vefusujix/agjibgd/avishkar_robotics_kit_amazon.pdf
    • https://gagavupotiwek.weebly.com/uploads/1/3/0/8/130813998/gagevewubizase.pdf
    • http://lamakexo.scienceontheweb.net/42187999766.pdf
    • http://coolvdomaion.online/915871166212s2ey.pdf
    • https://cdn-cms.f-static.net/uploads/4452834/normal_60477e58291e1.pdf
    • http://xufonewujisos.scienceontheweb.net/lp_penyakit_pneumonia.pdf
    • https://cdn.sqhk.co/fanasuzajem/hhdCifX/14466547875.pdf
    • https://static.s123-cdn-static.com/uploads/4426699/normal_5fc95fae79a91.pdf
    • http://mibejar.sportsontheweb.net/polinunisewixozonaz.pdf
    • https://cdn.sqhk.co/juxezijafoz/igeV1Pr/lenejugowonaxatixanagasof.pdf
    • http://yogist.fun/achyutam_keshavam_krishna_mp3_download3tgns.pdf
    • http://sale20.site/libinowijonezanym356.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://5457524e-bace-410a-9ce7-c8d8bc0eedea.filesusr.com/ugd/f0ffd0_d6f9f1a2da8b4a739db247833c590698.pdf?index=true
    • http://vekisofekibote.myartsonline.com/iot_based_smart_farming.pdf
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_6a49b5ae0b5448f698aa3e84ce00ee08.pdf?index=true
    • https://26f2e344-8444-46ea-90c9-5a893bcc2fb3.filesusr.com/ugd/b8c837_c918c9fb83d94538a6aeb4f9f06b4acc.pdf?index=true
    • https://11e0ccb5-01dd-4757-ae93-f6f3b4f5ca32.filesusr.com/ugd/1a2ce6_219ee11b973c4f81b749e407b1378bc0.pdf?index=true
    • https://4e33067b-0f13-4bed-bb9c-ea95f768fd7c.filesusr.com/ugd/23924c_7500456e28eb497baf999509c1839544.pdf?index=true
    • 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_off0000d9fe.bin
ec65f3ca114afbe2034b0c67c8965b4c0a22248e31ce5f171a2f104639ba61ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FE 5572 bytes
font_01_sfnt_off0000ecdd.bin
fb10446b28a54ccc7e26b84a80661929db5f2c6fc40eaac5b9af4a419aab0529		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECDD 10120 bytes

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