Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f990e28ef9f0a23…

MALICIOUS

PDF

74.1 KB Created: 2020-11-20 08:04:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 47744d100e2a806e5a5294697245bf3e SHA-1: da19fd8b28687a63f386e914039fac097438b227 SHA-256: 8f990e28ef9f0a235eabd468f9704ba54d77fc096f6bf3da2f1968d1dc51222b
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffset.ru/aws?utm_term=broken+age+apk+obb PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4477916/normal_5fae83f52b008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386366/normal_5f8f383469a11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f969a2852c35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f87187fbca9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383160/normal_5f8db38e28dab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/losiroxaki.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/commutative_property_worksheet_kuta.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/ps3_thermal_paste_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/die_hard_collection_steelbook.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/deere_and_co_2017_annual_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59602a49-2b34-4c35-9497-af2d46c55097/bajadafumegiboje.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/homewood_flossmoor_high_school_school_report_card.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/crocodile_rock_piano_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/20132508606.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9ED 4692 bytes
SHA-256: f03a501bfd0b87f8666d024aa8c698db52fc93fd95bf0b74f2c42400a03394b2
font_01_sfnt_off0000e9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D7 10484 bytes
SHA-256: 43ff794d43fa21399b4c67a47ae1c6b5ab827d62ec1dfbd49ef228eac3d24ae6
font_02_sfnt_off00010d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D64 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176