Malicious PDF — malware analysis report

Static analysis result for SHA-256 2918155ae2620334…

MALICIOUS

PDF

96.2 KB Created: 2021-03-24 15:11:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd5447713b188f5cf77fdc55bb21bfe8 SHA-1: 65c3237b2262c08aa23360b0e8fbd6d4a6ff82a5 SHA-256: 2918155ae26203344e15bcf178d8e4b0d565204849ff014a3d94673339d82769
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain, likely intended to trick the user into downloading further malware or visiting a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of external URIs and the overall detection profile suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/wix?keyword=signature+junior+sewing+machine+manual
    • http://wofaguwere.iblogger.org/15479912535.pdf
    • https://cdn.sqhk.co/wekaradukuve/Ahejbjf/pimir.pdf
    • http://romabeveseruzor.22web.org/amoeba_sisters_video_recap_enzymes_answers_chart.pdf
    • http://kubopunowazi.22web.org/lord_of_the_rings_amazon_cast.pdf
    • https://cdn-cms.f-static.net/uploads/4369332/normal_6059f07dc2d96.pdf
    • https://cdn.sqhk.co/verexumifo/cCSieij/fobarorof.pdf
    • https://cdn-cms.f-static.net/uploads/4409403/normal_60146d6cb0cc6.pdf
    • https://cdn-cms.f-static.net/uploads/4376875/normal_5fe97303ee71d.pdf
    • https://cdn.sqhk.co/matikefateri/hfgejdn/jozex.pdf
    • https://cdn.sqhk.co/vixemujomu/jejgtUt/47680791895.pdf
    • https://cdn.sqhk.co/mebosuxular/vFjbhjH/virobatulagoz.pdf
    • https://cdn-cms.f-static.net/uploads/4391326/normal_601473224ecf0.pdf
    • https://cdn-cms.f-static.net/uploads/4424043/normal_6041851380b46.pdf
    • https://cdn-cms.f-static.net/uploads/4497358/normal_600f1e9d9c1f9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://xediguvodolej.epizy.com/diltiazem_er_dosage_forms.pdf
    • http://jabowedufup.epizy.com/bolezujigute.pdf
    • http://velumosak.epizy.com/19959498964.pdf
    • http://zekebevijizin.rf.gd/novice_34_dressage_test_sheet.pdf
    • http://zugejono.epizy.com/35383106300.pdf
    • http://jidoxib.rf.gd/architecture_handbook_of_professional_practice.pdf
    • http://forubav.rf.gd/gujarat_university_b._com_books_free_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012ce3.bin
1712b9685b3d165d79a81862159df6122f6eb16f9b9e5cbc91aad40ec3a8de04
pdf-font-stream PDF embedded font (sfnt) at offset 0x12CE3 5364 bytes
font_01_sfnt_off00013efc.bin
a62703e8e30e26e2c8df3e6d2c49547c4435a7fda45be59d24c6dab0e8bb2267
pdf-font-stream PDF embedded font (sfnt) at offset 0x13EFC 11132 bytes
font_02_sfnt_off000164e6.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x164E6 4324 bytes