Malicious PDF — malware analysis report

Static analysis result for SHA-256 75c5cad3aee94b20…

MALICIOUS

PDF

83.3 KB Created: 2021-03-20 13:50:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 795f95d7f5f61a974134893121027498 SHA-1: 2476304f6b134c42fc33bcb98bbd24c0b96b0709 SHA-256: 75c5cad3aee94b20147b633bb85c01e19dc84e6ef75558599404647199478663
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host a malicious payload or phishing page. The document body and metadata also contain references to this URL, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://soxebez.ru/wix?keyword=scan+cephalon+fragments+warframe PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485929/normal_6023f47c9c405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384295/normal_600a48f1c2fa1.pdfIn PDF document text
    • http://zuxenegobepejij.22web.org/blood_pressure_medication_guidelines_uk.pdfIn PDF document text
    • http://lakuberik.mywebcommunity.org/nanipabo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495997/normal_5ff392fa56429.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387226/normal_5fd1cf33875ef.pdfIn PDF document text
    • http://jazajozem.iblogger.org/50854987142.pdfIn PDF document text
    • http://tikanaw.mypressonline.com/ansioliticos_y_sedantes.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/minabiwa/51731168140.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c523b11-fb0d-4388-a31a-ee7d5551808f/kevatinavosopali.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/vcf_format_variant_call.pdfIn PDF document text
    • http://vudujufilax.epizy.com/luromezasukipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d8f09e7-a8b8-4194-8f68-d8dbe6fdf131/dd_3.5_extra_classes.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/sejezajis.pdfIn PDF document text
    • http://vemusimovoxodan.rf.gd/my_android_phone_restart_again_and_again.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d69f0521-29fe-47f3-90b7-f609dbd4a171/dozove.pdfIn PDF document text
    • http://jarepumemaxi.onlinewebshop.net/ecg_rhythm_strips.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/anonytun_vpn_version_1._3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7adc1041-b5e0-49fd-9283-6ace77cbe557/apple_iphone_x_sms_tone_download.pdfIn PDF document text
    • http://zusozokag.epizy.com/what_age_is_it_okay_to_start_lifting_weights.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c28053-3127-4632-ada6-72b1931d38f4/iphone_5c_price_in_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/gusotamodozabesapiwawib.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/sutofo.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/28302414042.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_off0000f7d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D6 5364 bytes
SHA-256: f733d680df025e130c5bfb7bf7422f7a0f48a558edfec1eb533858427669767f
font_01_sfnt_off000109e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109E4 12248 bytes
SHA-256: 119290ca0041054fffd0cf55c34e2a8c7c7077da7668b329895f86aafbe7e135
font_02_sfnt_off00013125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13125 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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