Malicious PDF — malware analysis report

Static analysis result for SHA-256 3564fedf724f0d8f…

MALICIOUS

PDF

69.9 KB Created: 2021-03-06 18:42:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5016d138c3ae0d6b945ff6def6673e53 SHA-1: 9ff82aef401fc2371ed77160ba6dbda584ad5ac9 SHA-256: 3564fedf724f0d8f3c1ed02a5f4c37d4a23554b788faaac769178c679d6ad8fb
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 attempt. The document body, though heavily obfuscated, contains references to 'service schedule' and the embedded URL points to a domain that has been associated with malicious activity. The primary attack vector is likely spearphishing attachment, leading the user to a malicious URL.

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://druttle.ru/strik?utm_term=evinrude+etec+115+service+schedule PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451028/normal_5ff650fb04f0a.pdfIn PDF document text
    • http://luxomozuk.mypressonline.com/taco_bell_power_bowl_calories_without_sour_cream.pdfIn PDF document text
    • http://mybatut.store/xelajuwehcljk.pdfIn PDF document text
    • http://ideal-it.fun/ribatikunetefavedoroniguv6zm2.pdfIn PDF document text
    • http://mpvideo.org/2679445648029pn4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469386/normal_6041ef0427059.pdfIn PDF document text
    • http://sodalabs.pro/13561355305x4eop.pdfIn PDF document text
    • http://verifiedbadge-lnstagram.com/how_to_keep_your_hope_scholarship4d1ai.pdfIn PDF document text
    • http://lukapar.22web.org/momokafiza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb1bb7d1-f9b2-4941-8b5d-cc22a41db693/nusine.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/botany_interview_questions_and_answers.pdfIn PDF document text
    • http://fozujapajus.epizy.com/alesis_dm10_mkii_pro_vs_strike_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/ilocano_riddles_with_english_translation_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/python_tkinter_tutorial_w3schools.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cf2121a-d673-45f6-be15-3514c7061d8e/62491760227.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/jubuzosajixezirijobogu.pdfIn PDF document text
    • http://wojibikifi.myartsonline.com/40995512468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67ed139f-2059-4ba3-a335-7e8ba09a1caf/should_the_word_presidential_be_capitalized.pdfIn PDF document text
    • http://jafixomedimun.onlinewebshop.net/jesoriv.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/kogevekulutixugizemup.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AC 5008 bytes
SHA-256: 63b6a31e23c0a52fbd8931d105d670b08e616a476fb201f546236d7e6f940a42
font_01_sfnt_off0000e7c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C5 10104 bytes
SHA-256: d0428c87108ff95cab9514bcc253b2049ee0bbddd4d09c6da51077b66906514b

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