Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be423da20d3579d…

MALICIOUS

PDF

64.3 KB Created: 2020-06-09 08:10:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 92b174ad29997cf106e8c753b12390c5 SHA-1: 00b756b2039d7daab4c940cbc5055187e4c8cd2b SHA-256: 1be423da20d3579da8d6cad64c07162a66b47b33da11b31f5f843abbf27bd506
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of external links, identified as a PDF link farm. The primary purpose appears to be SEO spam or directing users to potentially malicious content hosted on various domains. No scripts were extracted, limiting the analysis of direct payload execution. The presence of numerous external links suggests a social engineering or redirection-based attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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 http://therileyrecruit.com/uploads/1/3/1/6/131637432/131637432.html#%25D8%25A7%25D9%2584%25D8%25A3%25D8%25B1%25D8%25B5%25D8%25A7%25D8%25AF+%25D8%25A7%25D9%2584%25D8%25AC%25D9%2588%25D9%258A%25D8%25A9+%25D8%25B3%25D8%25A7%25D9%2586%25D8%25AA+%25D8%25AC%25D8%25A7%25D9%2586+%25D9%2583%25D8%25A7%25D8%25A8+%25D9%2581%25D9%258A%25D8%25B1%25D8%25A7%25D8%25AA+%25D9%2581%25D8%25B1 PDF link annotation
    • http://theimsonline.com/uploads/1/3/1/8/131872149/7597325.pdfIn PDF document text
    • http://mail.broadripplecandle.com/uploads/1/3/0/3/130313466/719d612ea082.pdfIn PDF document text
    • http://webdisk.brisbaneantennaprofessionals.com/uploads/1/3/1/4/131454452/5248473.pdfIn PDF document text
    • http://dev.poliglow-int.com/uploads/1/3/0/3/130379814/f06792466e.pdfIn PDF document text
    • http://addesignsllc.com/uploads/1/3/0/9/130969833/280883.pdfIn PDF document text
    • http://hostmaster.markdoodesplanning.co.uk/uploads/1/3/0/7/130740050/gefawamalozuliw_gopow_zobinutusife_minada.pdfIn PDF document text
    • http://mtlspeechtherapy.com/uploads/1/3/2/3/132303093/84860be6d33.pdfIn PDF document text
    • http://shineaccountants.com.au/uploads/1/3/1/4/131438151/5b9823d7e42b27f.pdfIn PDF document text
    • http://uabadmontas.com/uploads/1/3/0/6/130604372/30de0c.pdfIn PDF document text
    • http://shopcharlienewyork.com/uploads/1/3/1/6/131636824/a0c36134a741.pdfIn PDF document text
    • http://partybikebusiness.com/uploads/1/3/0/2/130289474/2521542.pdfIn PDF document text
    • http://anaxeandagun.com/uploads/1/3/1/4/131406109/xagazilodexipen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fimesijonoba.files.wordpress.com/2020/06/65623859415.pdfIn PDF document text
    • https://vobadir.files.wordpress.com/2020/06/saposigoxe.pdfIn PDF document text
    • https://daguxazogas.files.wordpress.com/2020/06/janujanejujewexigen.pdfIn PDF document text
    • https://redejoxas.files.wordpress.com/2020/06/rizokefexujevolej.pdfIn PDF document text
    • https://mijawodemim.files.wordpress.com/2020/06/59913766402.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00009dbe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9DBE 31628 bytes
SHA-256: 96b8adbb4b6c27789aa1e4192f477c8585fb96e6918891680d7d328c34b71d24
font_01_sfnt_off0000d4c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C3 8508 bytes
SHA-256: 4ddeb6cb05688e75070cd698832ccbea8777abd73a8fdc5a99e22f0b3580ed6d

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