Malicious PDF — malware analysis report

Static analysis result for SHA-256 49985c4fe0dc8591…

MALICIOUS

PDF

74.4 KB Created: 2021-05-16 06:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a97ad37f6bdca73eb7fb00747d583c37 SHA-1: 2d3216a8bcd39e8886beccec9fb092de7c1435d8 SHA-256: 49985c4fe0dc8591b015773acbd731007dcc71208fdd5bf0ede605f88a5302c8
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though partially corrupted, contains text related to 'call forwarding centurylink', suggesting a pretext for the malicious link. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware delivery attempt.

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://jumiwimov.ru/strik?utm_term=how+to+setup+call+forwarding+centurylink
    • http://gujozulogisin.scienceontheweb.net/94255460158.pdf
    • http://sixesijilolun.mywebcommunity.org/what_does_it_mean_when_someone_calls_you_alpha.pdf
    • https://static.s123-cdn-static.com/uploads/4486743/normal_5feb0509abf74.pdf
    • https://cdn-cms.f-static.net/uploads/4408995/normal_5fe8780874da7.pdf
    • http://nipobudagese.mypressonline.com/prefix_and_suffix_meaning.pdf
    • http://zudumawekal.22web.org/84838879550.pdf
    • http://medebupima.sportsontheweb.net/45115009453.pdf
    • http://wotukujis.sportsontheweb.net/61980717912.pdf
    • https://static.s123-cdn-static.com/uploads/4467912/normal_5fe46efbba10a.pdf
    • https://cdn-cms.f-static.net/uploads/4473916/normal_605b3b9e1213a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9390ad69-902c-46b2-be5a-69f0ab05f4ca/gisejigimido.pdf
    • https://s3.amazonaws.com/sowirutelevolur/veneloz.pdf
    • https://uploads.strikinglycdn.com/files/b0b86a62-1de5-4f01-a33a-1d22cbbd13f6/69692825941.pdf
    • https://s3.amazonaws.com/rujimidujek/aida64_portable_full_version.pdf
    • http://rotaduwifomol.rf.gd/bollywood_punjabi_song_mr_jatt.pdf
    • https://uploads.strikinglycdn.com/files/21cea1f0-900d-4215-8e19-544d98508f70/kubota_engine_parts_catalogue.pdf
    • http://ruzoguniwu.epizy.com/25109663995.pdf
    • https://uploads.strikinglycdn.com/files/0ea2c6c1-a263-416d-9ace-f8933092fb8f/46112216566.pdf
    • http://derugibuxopil.epizy.com/aws_cloud_practitioner_practice_exam_questions.pdf
    • https://uploads.strikinglycdn.com/files/a5f173a9-4771-4082-b0fb-324cddd1cd0f/jusodizubugosusejakov.pdf
    • http://givesal.rf.gd/4229735855.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_off0000e36b.bin
03f3f252464941364cfc7565def961be751af0c42ee5de60f8c12b4ef8620871		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE36B 5544 bytes
font_01_sfnt_off0000f670.bin
ed5af9866192e4b26f2da71119db17251baec46967b8dc9a762a163cc9c80e46		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF670 10944 bytes

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