Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad68cea90eab4c63…

MALICIOUS

PDF

73.0 KB Created: 2021-01-06 01:56:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: ab7a4a3f71c67dd0fe2ac795a611ccc9 SHA-1: 348fc8762dc94c4cfccfbf9679620ac7ae3a368c SHA-256: ad68cea90eab4c6356abcc486f29c0dc1da5d157010b75cd95fd1052e3fac6f1
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a download button lure and an embedded URL pointing to a suspicious domain further supports this. The document body, though heavily obfuscated, contains references to 'candy crush saga hack apk', suggesting a social engineering tactic to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafficel.ru/aws?utm_term=candy+crush+saga+hack+apk.+com PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470825/normal_5fec3851221a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527237/normal_5fb98e67f0627.pdfIn PDF document text
    • https://cdn.sqhk.co/duxajoje/LziHpgd/my_talking_cat_koko_mod_apk_rexdi._com.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/uiivghh/mobile_bitcoin_wallet_app.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/474db4dc-7155-4c71-a04a-216f905fe6f8/soraliperotisagagage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81bfa6c9-0b49-4e32-b245-a0fc11551847/tom_selleck_western_movies_dvd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a261987-b345-4336-ba10-09d51a53e4a9/zavapawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a101d964-ad18-49e3-93bd-163fb5894f84/consumer_behavior_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b060b796-3a33-4418-8eb4-1507ecc9e02c/gafumop.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/ingraham_auction_house_coventry.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_off0000df87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF87 5556 bytes
SHA-256: 04781746aca14810fcc03836689513241de8bfcf761f82b68d16567f262eccfa
font_01_sfnt_off0000f255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF255 10864 bytes
SHA-256: d2cdc79b9ed66abb508e9aaf28702c76777f4d3d88788aa59247be5ac451dbe1