Malicious PDF — malware analysis report

Static analysis result for SHA-256 323f2bb97562dcd4…

MALICIOUS

PDF

68.3 KB Created: 2021-06-14 03:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2185f59686f6140ea5b409ed9b50d3e8 SHA-1: 53ea08e80ca0107deaaec3062d612b12ae11f622 SHA-256: 323f2bb97562dcd45429f4bc8cf7b74752c1755e521d52020288893aa6fece2b
186 Risk Score

Malware Insights

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

This PDF document was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or redirection scheme. The embedded URLs and the PDF structure indicate an attempt to direct users to potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://archism.ru/pbw?utm_term=hot+mature+wife+pictures PDF link annotation
    • https://sutopudebesi.weebly.com/uploads/1/3/1/4/131438093/vilevutivokuw-madigewisopisu.pdfIn PDF document text
    • https://jedinelig.weebly.com/uploads/1/3/5/9/135982929/soxixutewejoka.pdfIn PDF document text
    • https://bupifepubeweta.weebly.com/uploads/1/3/4/3/134336259/sobopexofinujowus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494166/normal_600517bb7616f.pdfIn PDF document text
    • https://dexanefuv.weebly.com/uploads/1/3/1/3/131383512/legukuduta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370542/normal_5fc6ce13d6b54.pdfIn PDF document text
    • https://kabapavubume.weebly.com/uploads/1/3/4/7/134742816/6f3f7.pdfIn PDF document text
    • https://kezevamu.weebly.com/uploads/1/3/4/2/134266298/1969034.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478408/normal_600d44d9f35f6.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4403118/normal_60b4daadc2c1f.pdfIn PDF document text
    • https://vebexedupatad.weebly.com/uploads/1/3/2/7/132740253/bejamogevinuvadajela.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_60638b7f2c054.pdfIn PDF document text
    • https://revapukas.weebly.com/uploads/1/3/5/3/135323612/vewigek-jebut.pdfIn PDF document text
    • https://pujatafar.weebly.com/uploads/1/3/4/8/134854232/fobakisopamufaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xedenuw.pbworks.com/f/66321993247.pdfIn PDF document text
    • http://nudenuxote.pbworks.com/w/file/fetch/145187457/23223998031.pdfIn PDF document text
    • http://kiruguwota.pbworks.com/f/44230091441.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4688c9a9-961b-4403-ac14-854ea8fd678f/arduino_mkr_1010_bluetooth_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31176f4e-1f10-4aa3-8678-d79b3f893cd2/comentario_biblico_sobre_la_vida_de_jose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23c94149-cedc-4772-b3aa-f4382a9d7760/ragameburomikite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/816384e9-6840-4bfb-9690-dbc6cf91ba8e/21748802929.pdfIn PDF document text
    • http://xanovobuxebo.pbworks.com/f/freddy_fazbears_pizza_mexico.pdfIn PDF document text
    • http://palixazoke.pbworks.com/w/file/fetch/145117098/auvon_tens_unit_user_manual_as8012.pdfIn PDF document text
    • http://wafijovodek.pbworks.com/w/file/fetch/144895194/fexaparenur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/450ed604-5194-4cc7-9288-b3eaa370ac6a/88285199066.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_off0000d14c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD14C 5184 bytes
SHA-256: dbeae3ff2ae8e14bfa38fb2bd879c61631ffb8632ba64847c5aa3ea44630f547
font_01_sfnt_off0000e2e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E5 9708 bytes
SHA-256: 2412d8c698f398cc35c5ba7c38bba307b4a9b72509c7513a0d83048cd53459cc