Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e936d52de685024…

MALICIOUS

PDF

77.8 KB Created: 2021-03-27 23:47:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3268b476974058ad9b7d4b147887f4b6 SHA-1: b6f36eb95a9b5376fb74451b272e0440b801a3cb SHA-256: 7e936d52de685024001096f7944f3e6e574b5dc06f025525e8ce5d3da999a7eb
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that, when clicked, leads to a phishing page disguised as a promotional code for Red Cross first aid training. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=red+cross+first+aid+training+promotional+code
    • https://wugowimuvup.weebly.com/uploads/1/3/4/7/134762233/11a42.pdf
    • http://vurujupafowutox.mypressonline.com/49366762194.pdf
    • http://dawexefif.getenjoyment.net/does_walgreens_sell_jumper_cables.pdf
    • http://mizebojusur.mypressonline.com/21811743485.pdf
    • http://mazers.fun/the_dictator_cast_borat4ubw6.pdf
    • https://luwuruguvuwotom.weebly.com/uploads/1/3/0/9/130969706/kinujajumajapig_jevibejab_votise.pdf
    • https://gabamavipe.weebly.com/uploads/1/3/3/9/133999819/8945071.pdf
    • http://oneplusonemain.xyz/65656979150irjtn.pdf
    • http://mmamba.ru/quickbooks_for_churches_and_other_religious_organizationscvgbr.pdf
    • http://makamar.tech/nogusim4bfzl.pdf
    • http://sweetmeet.online/wileys_examxpert_verbal_ability_and_reading_comprehensiondzoq6.pdf
    • http://gaydating.world/savosuvugivemazibugego92v13.pdf
    • http://nutusugeralinet.mypressonline.com/36115651065.pdf
    • http://lnstagram-verificationbadgeform.com/nunusafbznq4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jopubijako.atwebpages.com/wugijukokuwukezekisitopu.pdf
    • http://wovuluvoju.onlinewebshop.net/45265054965.pdf
    • https://uploads.strikinglycdn.com/files/db437d6a-fdd8-4386-8bf9-9602ae60b6d5/can_you_connect_bluetooth_headphones_to_lg_tv.pdf
    • http://nomamazuzut.atwebpages.com/34085228117.pdf
    • http://kapirexazi.onlinewebshop.net/mumitufaxolazinorexi.pdf
    • https://uploads.strikinglycdn.com/files/7af231cb-0d97-4d1e-8948-13d81f5c34dc/alan_watts_quotes_audio.pdf
    • https://uploads.strikinglycdn.com/files/5b05a4a6-8bec-4f6c-ac75-f4d906cb1d05/fozipixeborawuvapiwet.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_off0000ef70.bin
da30f305ba0f923a803dcdbe21454b2f7f302fb7f024d31dfac618ba29331bdb
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF70 5484 bytes
font_01_sfnt_off0001020c.bin
d8dc439f6a553f176eccdbef30b0c8c33eb58bf0ac9b7c57501f6e91478813b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x1020C 11740 bytes