Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2227e3ad6811e9c…

MALICIOUS

PDF

90.8 KB Created: 2021-02-26 02:40:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: abd941e269a8a5ec56b613a3cb203ad5 SHA-1: 192d14d8d6f037fd9798db0d202301728a97fe43 SHA-256: e2227e3ad6811e9c792482f498f8f49dd6a0b1e2e8ee3cc618c977e6067d5185
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 'https://jacksth.ru/award?keyword=what+size+is+the+iphone+5c', which is likely part of a phishing lure. The document body, though heavily obfuscated, contains text fragments that suggest a lure related to an iPhone, aligning with the award notification theme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/award?keyword=what+size+is+the+iphone+5c PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469374/normal_5ffd6dba46120.pdfIn PDF document text
    • http://selozufuwadapuw.66ghz.com/bepifobo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470389/normal_600f5f09edebd.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/jiicdha/88504975865.pdfIn PDF document text
    • https://cdn.sqhk.co/javomekoru/hfSgdMQ/seashine_adventures_cabo.pdfIn PDF document text
    • https://cdn.sqhk.co/mivesumor/jXgehh6/4122783602.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426424/normal_601edb4e84948.pdfIn PDF document text
    • http://wamuvosuvebupa.iblogger.org/xowukiwetexefabipunewijaj.pdfIn PDF document text
    • https://cdn.sqhk.co/tefulobesa/b9gdhgy/diced_pineapples_fabolous.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/jcJw9hh/55470829288.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427097/normal_5fe54899b896d.pdfIn PDF document text
    • http://brosbass.com/3833509138725qrm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379241/normal_5fc89126244e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://jisaxabajerofu.epizy.com/seth_green_net_worth_2020.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF224 5684 bytes
SHA-256: 27ada764e9c24f04a01e9e9d9146e8eea389e9e59a46f2998ed8a69d74aac4d6
font_01_sfnt_off000105fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105FE 5080 bytes
SHA-256: e7f8729614fb5fab2f9abb9baea029d2125900511a13a60041b484e58a7f36c4
font_02_sfnt_off00011756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11756 6148 bytes
SHA-256: 488ffee5e9c33bcc1f3f00aec749f35977d0cdd209ffadaee35194d66ecc177d
font_03_sfnt_off00012736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12736 18388 bytes
SHA-256: 7a20f473fd798fb601cdb726f9862e39b647e11f518d671bf8f7c6ab1ae99445

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