Malicious PDF — malware analysis report

Static analysis result for SHA-256 16192e47f3ed388e…

MALICIOUS

PDF

73.3 KB Created: 2020-12-25 00:43:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 355284f91c79dcafcff493479852ac99 SHA-1: 2095871f74f532a3feb9a418dbeaac3112a4b5c0 SHA-256: 16192e47f3ed388ec127a95ac7672eede106104a91227b359d9b708b6c08e1c9
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for brand-impersonation credential phishing (AMAZON). It contains numerous external links, with one specifically pointing to a redirector that likely leads to a phishing page. The presence of embedded JavaScript, though not fully analyzed, suggests potential for further malicious actions like downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://kazumole.weebly.com/uploads/1/3/1/4/131454435/fozewaxujaxu_toriva.pdf.
  • 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://traffnew.ru/aws?utm_term=bunker+hill+security+camera+manual+62468 PDF link annotation
    • https://kazumole.weebly.com/uploads/1/3/1/4/131454435/fozewaxujaxu_toriva.pdfIn PDF document text
    • https://kasozufadoji.weebly.com/uploads/1/3/4/5/134523760/xizuvuteke-tunozigidoxafo.pdfIn PDF document text
    • https://xufaparada.weebly.com/uploads/1/3/4/0/134017939/3606568.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5527e184-000f-474a-bd7b-1167c66332ec/880262859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1247da5-c7d9-4b55-b395-81fe13a80325/getibopeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27f8d200-0ab3-45cf-b30b-7512901749d9/pimasipivedetep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2b3366b-c65a-4817-8647-8645a18380a9/92202356762.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/56642907179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f2a8c0d-d53a-426f-878a-e900ea26f59b/example_of_passive_transport.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/zituwotovasujeredipi.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/ananda_bhairavi_songs_free_doregama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/708dd53e-2f0d-479a-a45b-e6ac42dccc67/depavemipigowevaripobawop.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/proofex_engage_data_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0390480b-15d1-4525-83cd-a4e3fa5f4353/74182728015.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_off0000e0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F0 5820 bytes
SHA-256: 3476e34a3a3bb92a3af00419d3215690be35e25c6bde349521687dd9824d81c7
font_01_sfnt_off0000f4a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A5 10472 bytes
SHA-256: 55321eee60698c934a1b56c318c6664990da95ba2b9481979a2614edd43da331

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