Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ad45612f05afe9…

MALICIOUS

PDF

74.8 KB Created: 2021-03-28 18:24:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 435b221321475d304b894709c6f56ea0 SHA-1: 92b1cc7563665c68ca725e7445556dc126c7dbf0 SHA-256: 18ad45612f05afe9fb614f724e5eed1ee7c1cf95a382bf986cc72eda2abcfa15
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. Heuristics indicate it's a phishing attempt, and the ML classifier strongly suggests maliciousness. The PDF structure and embedded content are consistent with a phishing lure designed to trick users into clicking a link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/award?keyword=alternative+fuels+types+and+importance+pdf
    • http://speak4pro.com/23878487669zmrb0.pdf
    • https://cdn.sqhk.co/weruvewo/LDThdgf/42611886742.pdf
    • http://supermagazforsale1.xyz/ximapikagikugopss869.pdf
    • http://zesabekuziwuga.iblogger.org/evaluate_pharma_2019_report.pdf
    • http://busivel.xyz/359560659455anmm.pdf
    • http://dayzcommunity.info/wexefadirodupufawulido02xf7.pdf
    • https://cdn.sqhk.co/wefopijupe/hjiejgO/jivewatigagefexuvakidige.pdf
    • http://gefaveje.22web.org/anomaly_defenders_apk_free.pdf
    • http://callipakk2.site/iatf_16949_2019jxdj3.pdf
    • http://pr-bux.online/is_american_journey_good_dog_foodg20tv.pdf
    • https://cdn.sqhk.co/mudemodox/QTqNyje/green_circle_colored_contact_lenses.pdf
    • http://bbcua.site/nipisuvohu5yz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b48cbdaf-55d1-4413-aa1f-f527d340fd81/roxabepifoxorirewezirosam.pdf
    • https://56148a0a-83a3-4003-94ff-78d3044b7c00.filesusr.com/ugd/6f5f23_93374434690b4b1184e93e49040a76cb.pdf?index=true
    • https://dba0ca6b-c979-46b3-87c9-041648dee063.filesusr.com/ugd/6f58fb_c8603ebf50c34252ac6a606a7c8f8856.pdf?index=true
    • http://zujorinilaxu.rf.gd/tevixukisi.pdf
    • http://pegalisijeg.epizy.com/kizubadigimujabexu.pdf
    • https://uploads.strikinglycdn.com/files/a168c8f3-6402-459b-abe8-5c6002ccc759/supernatural_book_of_the_damned_review.pdf
    • https://uploads.strikinglycdn.com/files/426f786d-91a0-4430-be93-164d469d6e3b/domiwuzozafafelurit.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_off0000e655.bin
199e5fa2fdd497a3324900ff3bae752b988fd4f7dcf64a643dd2bb2886a27ad8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE655 5452 bytes
font_01_sfnt_off0000f8df.bin
57c3074117b0cd96c966216c4a4fa393219b230d094482701d087fa25b143444
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DF 10836 bytes