Malicious PDF — malware analysis report

Static analysis result for SHA-256 140d0d76cb409042…

MALICIOUS

PDF

74.9 KB Created: 2021-06-09 19:24:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 10058b93f4bd3165215363af4fe89a78 SHA-1: aa63642b9b6dd926d572e9c08a4f4637f1537b01 SHA-256: 140d0d76cb409042e096f43ebabd4b38ad68ae8d57854527565ff67f3def1eb9
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains text related to a 'Punjab police character certificate form', which could be a pretext for a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://garglob.ru/pbw?utm_term=punjab+police+character+certificate+form+pdf PDF link annotation
    • https://vekananumapemu.weebly.com/uploads/1/3/4/0/134012300/7684731.pdfIn PDF document text
    • https://wefopizek.weebly.com/uploads/1/3/4/8/134849363/sudixetufakir-kikogepolomafa-runuki-visegoxaxirex.pdfIn PDF document text
    • https://baduzasozem.weebly.com/uploads/1/3/1/4/131407439/gusowifokuxek.pdfIn PDF document text
    • https://koxowugazetumul.weebly.com/uploads/1/3/6/0/136015765/2113774.pdfIn PDF document text
    • https://suvejeko.weebly.com/uploads/1/3/1/4/131407233/4692332.pdfIn PDF document text
    • https://jetisinodab.weebly.com/uploads/1/3/5/3/135335938/fasone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411916/normal_603870aadb3e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376379/normal_60053d6879aa0.pdfIn PDF document text
    • https://dinidoleto.weebly.com/uploads/1/3/0/9/130969871/vizuxitubijogifamuf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428342/normal_5ffc2af3bfbb0.pdfIn PDF document text
    • https://puzapageduz.weebly.com/uploads/1/3/1/4/131453954/05c1d.pdfIn PDF document text
    • https://pilumana.weebly.com/uploads/1/3/2/6/132683063/noranusedawor_xiwaxawa_lifekonabu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385869/normal_5fcef1b059507.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/tegemakalejedoku.pdfIn PDF document text
    • https://jovuwimuj.weebly.com/uploads/1/3/0/9/130969820/8094121.pdfIn PDF document text
    • https://sizosunobefema.weebly.com/uploads/1/3/1/4/131453016/7169942.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/05b6ddc5-2931-43e6-923a-5a970193f97e/sutamunigesomimatarab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87355dc1-e76d-471e-bcf0-3657fc8be950/39211063019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ad339f-79b7-4478-9325-1a4a9524f182/vogobodog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1730d78e-9890-4db1-a624-0ee10ced5c9f/jikixo.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_off0000e535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE535 5432 bytes
SHA-256: 58a3783d768d592afe62bd2c2b31283640ca4c6c328f241862e1a8f525edcd39
font_01_sfnt_off0000f785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF785 11344 bytes
SHA-256: fc05cd1b7eb1b6d1e11ba07ad51e15df4cbdae38db9585088b58faa07d416d9e