Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd5bbc698afbc60…

MALICIOUS

PDF

83.9 KB Created: 2021-03-02 22:13:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f219887aed8ae3d7a15888cceb8dedf SHA-1: 71849a8a02d1cca7e013946d4b61f51c7b6f9a88 SHA-256: ffd5bbc698afbc6080b3ab57d5a6eb35bf3f5639e9ddd35f4338567cbed540e0
136 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The presence of advance-fee scam lures strongly suggests a phishing or fraud attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate it likely serves as a lure to external malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://leonvi.ru/wix?keyword=vibrating+tongue+rings+ebay
    • https://static.s123-cdn-static.com/uploads/4420927/normal_5ff507ab91e55.pdf
    • https://cdn.sqhk.co/powedaguja/jdWijhs/bijajo.pdf
    • https://static.s123-cdn-static.com/uploads/4393197/normal_5ff6c636af285.pdf
    • https://cdn.sqhk.co/tizesefetus/ghhb1rV/94141190775.pdf
    • https://static.s123-cdn-static.com/uploads/4376359/normal_5fffff5059b35.pdf
    • https://static.s123-cdn-static.com/uploads/4480891/normal_6006ac392b8f2.pdf
    • https://cdn-cms.f-static.net/uploads/4476566/normal_5fd5fe1436cc4.pdf
    • https://cdn.sqhk.co/sidamebo/hkGklSQ/91715806602.pdf
    • https://cdn.sqhk.co/tebefaravuz/ahg0ADy/chop_chop_recipes.pdf
    • https://cdn-cms.f-static.net/uploads/4423700/normal_6033281570454.pdf
    • https://static.s123-cdn-static.com/uploads/4424331/normal_5fe22a4ed4101.pdf
    • http://loduwij.scienceontheweb.net/95410043560.pdf
    • https://static.s123-cdn-static.com/uploads/4484633/normal_5fff258f7a03c.pdf
    • https://cdn-cms.f-static.net/uploads/4481834/normal_5fe7e77caf00d.pdf
    • http://nasufulorejuwe.mywebcommunity.org/ge_hydrowave_not_spinning.pdf
    • https://cdn-cms.f-static.net/uploads/4366003/normal_601d843c48659.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bulalowisu/67296956667.pdf
    • https://s3.amazonaws.com/jirebonudur/jacoco_report_location.pdf
    • http://pazepoxi.atwebpages.com/fuguvilarafapevul.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcfc.bin
629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFC 6440 bytes
font_01_sfnt_off00010cf0.bin
81203c598fc9c763487b042d537a44812877c17edc2c78f1640f4f96676055d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF0 5028 bytes
font_02_sfnt_off00011e21.bin
813e0780ef8feeba9ef9ba7627c206fb4d482cdd31fe6f41422fb5345b9d5b28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E21 10668 bytes

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