Malicious PDF — malware analysis report

Static analysis result for SHA-256 932bad07c748888a…

MALICIOUS

PDF

83.4 KB Created: 2021-03-06 05:28:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 82ae65e15d6dddbc273d45726fd6f94c SHA-1: 9a944c1da662b56ab97db6b70659f8aa6a1b21a4 SHA-256: 932bad07c748888a9023f529c6ac1819dda71c22e10dd9036c73550c45940f61
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to PDF files hosted on various platforms, indicating a link farm or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URI firings point to an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://botokaw.ru/strik?utm_term=math+formula+in+hindi+class+9 PDF link annotation
    • https://malavaxun.weebly.com/uploads/1/3/4/0/134018228/fca95d704145b1.pdfIn PDF document text
    • https://sanijala.weebly.com/uploads/1/3/4/8/134889677/wenixuk-parawiki-tuvexe-belutiti.pdfIn PDF document text
    • https://zonisobeb.weebly.com/uploads/1/3/4/3/134333784/kukojid.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/vijetivuligiwo.pdfIn PDF document text
    • https://tupetemen.weebly.com/uploads/1/3/0/7/130738754/70c6892278a536.pdfIn PDF document text
    • http://bapatavusirave.mygamesonline.org/vox_ac15c1_tube_amp.pdfIn PDF document text
    • https://lamonide.weebly.com/uploads/1/3/4/0/134096931/8cfbff3b65b8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/0071fd32-0865-4371-bedd-356b79fcd6b1/lifizuxixokibefor.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/juvowokasijimavelawubo.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/9395070699.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/zasugajuwafeto.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/how_to_hard_reset_polaroid_tablet_a8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/902040e4-d04a-4e56-91c3-0bb2ba314f5b/49083160404.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f96edfd6-8763-42df-8fb7-0e2b090b06b8/9223216108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6480288-5c1a-4d8b-b5b8-930993a054af/6906322447.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/42507520812.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf8a4c98-e015-41bc-849d-107a23d44646/91687827455.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/the_anatomy_of_fascism_sparknotes.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/lozoxubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91727768-4f2c-495c-868b-fd036a9f73e9/miravukalugaren.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE112 5424 bytes
SHA-256: 136cc7a24e6da693ea11fc14cb1b5cdfa83cfab5e7180254be7412915ae80e4d
font_01_sfnt_off0000f35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35D 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off0000fec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC0 11064 bytes
SHA-256: e93a6db6b2b5cfec17a372a159b572573fe49516c94ce64af5c6b80198abf6a1
font_03_sfnt_off000124b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124B4 7904 bytes
SHA-256: 246f5585dbd1f8a83d55faddff74a647f608d0e2e9d9f0f1f427d077be3b5dca