Malicious PDF — malware analysis report

Static analysis result for SHA-256 e748b45196eaf642…

MALICIOUS

PDF

37.5 KB Created: 2020-03-09 14:21:21 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 90a0cec0e90a018cb105cf6c01ad8d06 SHA-1: 331e1a9008f116271745d8b2520f4e592773d6ec SHA-256: e748b45196eaf64273b806ca114fb4443b033c358240208d75eed83a27dde2df
96 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links are likely intended to direct users to malicious websites or for SEO manipulation purposes. No scripts were extracted from this sample, and the document body contained mostly metadata and obfuscated text, making it difficult to determine the exact nature of the lure beyond the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://www.luisaquezdayoga.ca/uploads/1/3/0/5/130551668/130551668.html#merge+multiple+pdf+foxit PDF link annotation
    • http://www.christyolsenfineart.com/uploads/1/3/0/2/130272905/3785674.pdfIn PDF document text
    • http://skisource.net/uploads/1/3/0/3/130313411/kuneragu_xigukowat_xitebapaweteze.pdfIn PDF document text
    • http://623hwy71.com/uploads/1/3/0/4/130483653/wozesoxapogupowadot.pdfIn PDF document text
    • http://www.projecthomestead.us/uploads/1/3/0/5/130551604/1506583.pdfIn PDF document text
    • http://saved.nyc/uploads/1/3/0/5/130588266/4588788.pdfIn PDF document text
    • http://bellyshapewear.com/uploads/1/3/0/3/130324192/2612084.pdfIn PDF document text
    • http://happyrecipebox.com/uploads/1/3/0/7/130740158/9748239.pdfIn PDF document text
    • http://cloud-able.com/uploads/1/3/0/8/130874575/3040977.pdfIn PDF document text
    • http://colacotwayartstrail.com/uploads/1/3/0/6/130639922/2b3e3aae0bf4cb9.pdfIn PDF document text
    • http://latviancontent.com/uploads/1/3/0/5/130590613/3834259.pdfIn PDF document text
    • http://demo11.vistait.com/uploads/1/3/0/2/130289247/6f881cf8b6.pdfIn PDF document text
    • http://virtualbudo.com/uploads/1/3/0/4/130476563/turomudimegozomizu.pdfIn PDF document text
    • http://mta-sts.mx.kammcreekfarm.com/uploads/1/3/0/6/130639344/2ce8511d5930.pdfIn PDF document text
    • http://monicawickerramsay.com/uploads/1/3/0/4/130483564/madurunobudux_gimupinaxibeja_pakarelenami_penavi.pdfIn PDF document text
    • http://kybral.com/uploads/1/3/0/5/130540280/kagipikupox_xarewumekewixuj_nopawijoju.pdfIn PDF document text
    • http://karmatechnic.com/uploads/1/3/0/3/130313610/7474095.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000692b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x692B 8296 bytes
SHA-256: 0adef4104e3de731e9941c2b768aa15af820974b5967324a76568e1ccac7d4d5