Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa09ad99d19c36a…

MALICIOUS

PDF

73.9 KB Created: 2021-04-30 21:34:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 627af80d40523c4659334f856800b390 SHA-1: 25ccb88f6140fae5a72319ae760fc8eeb2956213 SHA-256: 0fa09ad99d19c36a732d086d5cfdf9942752448f5ea33a07cc8c10ee835522f4
96 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan and an ML classifier indicating maliciousness. The presence of an embedded URI pointing to 'crophysi.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious intent, likely related to phishing or credential harvesting.

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://crophysi.ru/strik?utm_term=coso+internal+control+framework+definition
    • https://static.s123-cdn-static.com/uploads/4491159/normal_5fcb373810ef4.pdf
    • https://xulazipilo.weebly.com/uploads/1/3/5/9/135958699/dejasanikaxejovel.pdf
    • https://sikepexuzi.weebly.com/uploads/1/3/4/3/134317642/xerivemepisow.pdf
    • http://ligumexijigab.getenjoyment.net/1991479579.pdf
    • https://tenagudewujuga.weebly.com/uploads/1/3/1/1/131164273/jezotep.pdf
    • https://botironuz.weebly.com/uploads/1/3/1/3/131380999/ae82dc772ce86.pdf
    • https://static.s123-cdn-static.com/uploads/4373753/normal_5fe5e98f07df6.pdf
    • https://peliwotamo.weebly.com/uploads/1/3/5/3/135325711/2413592.pdf
    • https://cdn-cms.f-static.net/uploads/4413120/normal_5fd91c3c79931.pdf
    • https://cdn.sqhk.co/sokulutesi/ihzywgd/apartment_lease_form.pdf
    • https://cdn.sqhk.co/fatidizeru/jjBhhif/wheels_on_the_bus_bussongs.pdf
    • https://devumevone.weebly.com/uploads/1/3/4/5/134589636/veniviwikezajag-fokugularemojup-sirot.pdf
    • https://cdn.sqhk.co/jesisoritet/ijgpj4W/68054739160.pdf
    • https://riwominejakubik.weebly.com/uploads/1/3/4/5/134598273/877eb.pdf
    • https://cdn.sqhk.co/kufalavoxig/Xkifgic/221540731.pdf
    • http://zozavelomidabi.scienceontheweb.net/tivelimemubolopal.pdf
    • https://xaboweme.weebly.com/uploads/1/3/4/6/134659191/9963570.pdf
    • http://mofonuf.medianewsonline.com/us_history_timeline_from_1600_to_1800.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/muwomapotumugi/tafegotoxaxobeveguxebir.pdf
    • https://s3.amazonaws.com/senodiw/fusorelewor.pdf
    • https://s3.amazonaws.com/dagasopones/sample_construction_scope_of_work_template.pdf
    • https://s3.amazonaws.com/lorifawuvawot/mefaxarupetitekazedego.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_off0000e509.bin
562889f7cb33525c1132680ff7bae19227e39af7c870347f2a34f30471f440aa
pdf-font-stream PDF embedded font (sfnt) at offset 0xE509 5228 bytes
font_01_sfnt_off0000f6cb.bin
b02fd811b73065f68b72eea853ac69aab9ad1256689a288020dc823a69f4c894
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CB 10304 bytes