Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c7feb3fbd73160b…

MALICIOUS

PDF

75.8 KB Created: 2020-12-29 13:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1ed55588df6081aa92bf448a07836d83 SHA-1: 9767544ba0d258194d73cb3c3d56b7c1745b86ac SHA-256: 3c7feb3fbd73160bc799217ccefca91a16aa40ea1a6eb2e7783834811af0e780
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to a product manual, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/123?utm_term=black+and+decker+rice+cooker+manual+rc516 PDF link annotation
    • https://cdn.sqhk.co/ludibipimilu/jcjeOlh/70623566528.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482618/normal_5fda84e57f73f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464522/normal_5fcf9faaadbf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375907/normal_5f99c0034d7f4.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/gjdibYF/zuvinowagidovotimu.pdfIn PDF document text
    • https://cdn.sqhk.co/panosiritu/RXMZww8/marco_s_pizza_bowl_net_carbs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485321/normal_5fdac7233b677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378410/normal_5f8a2a213babb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460972/normal_5fb36275ecb37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385021/normal_5fdbfc58903ad.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzezufe/aje4jd6/shareit_transfer_share_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f874e2cc908d.pdfIn PDF document text
    • https://cdn.sqhk.co/semobisugigi/jFgfBDY/roxilire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426547/normal_5fa9aa0e30b03.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/tom_richey_ap_euro_study_guide_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/cisco_ws-_2960x-_48ts-_l_datasheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC3 5152 bytes
SHA-256: f6abb9465459b6d9a1ae826ef051b8575e87eced962bed3d1904f1e47ab936d6
font_01_sfnt_off0000ef22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF22 10780 bytes
SHA-256: 7603f3cb9e95c1a4948540e29b8a418c43e14bb45075d7f6ebc133139c7631ef
font_02_sfnt_off00011416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11416 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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