Malicious PDF — malware analysis report

Static analysis result for SHA-256 db275b23618571af…

MALICIOUS

PDF

82.9 KB Created: 2021-03-05 15:47:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 9447326572e7fb97ec34bed2cb3e3e47 SHA-1: 2fafbab745a3b9d5ba9c4e1c8225de225a92c5b1 SHA-256: db275b23618571af4b538a1224d24bba6c51d5d28abe51d206cf4b1592ba77ba
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that leads to a malicious domain, identified by both ML classifiers and ClamAV as a phishing trojan. The document body, though partially garbled, suggests a lure related to 'socialist production methods' to entice users to click the malicious link. No scripts were extracted, but the presence of external URIs and the malware detection strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/aws?utm_term=modo+de+producci%25C3%25B3n+socialista+ventajas+y+desventajas PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446035/normal_60067fcde449d.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/46787456937rqyeh.pdfIn PDF document text
    • http://keepqifi.space/ue_boom_2_mit_windows_10_verbindenzrjdx.pdfIn PDF document text
    • http://uscreditmonitoring.info/vomikibem3z98s.pdfIn PDF document text
    • http://amsidisi.xyz/lego_ninjago_9450_epic_dragon_battle_best_pricewyt78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367960/normal_602f5fcbdbc4e.pdfIn PDF document text
    • http://notdull-eng.online/child_care_aware_mn_grants_covidtdras.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366646/normal_5fd0948fae8a1.pdfIn PDF document text
    • http://sell-toclick.online/gopasifuh3i3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409238/normal_5ffa183dcf5f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403276/normal_5fd28bcf983f7.pdfIn PDF document text
    • https://cdn.sqhk.co/novitovikor/bhipjjD/fekusepuniweralepijemov.pdfIn PDF document text
    • https://cdn.sqhk.co/notizejamebo/djijdjb/tidivuxonigigobi.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/2ginhg1/vodoforegakusidebolixago.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/10014439392.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/felizirufewu.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/ejemplos_de_cualidades_personales_negativas.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/82840965756.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/gejakivefefemuw.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/torefukitikegis.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/75384454796.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_off0001024a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024A 5444 bytes
SHA-256: a11bbb559ba918af7a857f4de22bff1dbea193fe507ca6cf7faf7198263fb8d8
font_01_sfnt_off000114bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114BD 11892 bytes
SHA-256: cab2bb0f7aa9f03d5af4aa8b6dfb8a9bf83a1f2eca4b91d6de9b7c706162eaf0

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