Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f7e8b589175897…

MALICIOUS

PDF

80.9 KB Created: 2021-02-26 23:39:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: cd21740817773b66431cdbb719b75422 SHA-1: 2e5bcaa645525ae7de51172d941c4a6f56de8ada SHA-256: b9f7e8b589175897e68e1ed14974a7a01c9a75508ced75f58f936c8299ca5e41
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 disguised as a search query for a digital alarm clock manual. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL is the primary indicator of compromise, suggesting the document is a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/wix?keyword=rhythm+digital+alarm+clock+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4371536/normal_6001ef7663c2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482215/normal_5fe7168f3de43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489057/normal_601e01e8a3bb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417669/normal_600387eed8310.pdfIn PDF document text
    • http://xobapadu.iblogger.org/65153320042.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375353/normal_5febb6b288bde.pdfIn PDF document text
    • http://gutprod.xyz/cxc_past_papers_biology582gh.pdfIn PDF document text
    • http://instapriz.website/xagigefozukudaxbmbn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503874/normal_5ff8ab03b4d51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485299/normal_6033d941bbc83.pdfIn PDF document text
    • http://axacheat4.xyz/reaction_of_kobe_bryant_wifeenfmx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://banamuf.rf.gd/java_update_64_bit.pdfIn PDF document text
    • http://pudubekij.epizy.com/la_casa_de_papel_episode_guide_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/2170827101.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/georgia_on_my_mind_sax_sheet_music.pdfIn PDF document text
    • http://pewaxoxepizus.rf.gd/consumer_reports_subscription_discounts.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_off0000f318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF318 3520 bytes
SHA-256: bb25025fb81f8648ea6e36e6b0925dfa513897c6164640c9096bd43b38ce23c3
font_01_sfnt_off0000ff9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9B 5348 bytes
SHA-256: b64dd5ada4837b99350d226a9cf34674cabdcef2b12113c1944b863ffaff43fe
font_02_sfnt_off000111ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111AD 10496 bytes
SHA-256: cfaade48a387c8f5f6c3e8981b4f82feb79ef3a626f53d81810675b9c49b14ba

Open this report in the interactive analyzer, or submit your own file for analysis.