Malicious PDF — malware analysis report

Static analysis result for SHA-256 48fd66faea67a5ae…

MALICIOUS

PDF

38.7 KB Created: 2020-04-07 20:50:35 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-15
MD5: 48720711b7de39f6b677d20c5f363dba SHA-1: 0f804f8d1a7469c7f4e022e2b211a703339b3f75 SHA-256: 48fd66faea67a5aef62a3514f377036638a29f5a1ae87624111856304b8e1d13
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body suggests a lure related to 'sparknotes', indicating a potential phishing or SEO spam campaign. No scripts were extracted, limiting the analysis of direct malicious actions beyond link redirection.

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://marianarodba.com/uploads/1/3/0/4/130483736/130483736.html#my+papa%27s+waltz+sparknotes PDF link annotation
    • http://michaelvickersbaritone.com/uploads/1/3/0/2/130287882/6e48a3df546a9.pdfIn PDF document text
    • http://myforgottenself.com/uploads/1/3/1/0/131069738/1128232.pdfIn PDF document text
    • http://elprimojoe.com/uploads/1/3/0/7/130740330/b68b3fff312df70.pdfIn PDF document text
    • http://pratfallingthroughlife.com/uploads/1/3/0/5/130590215/7920172.pdfIn PDF document text
    • http://beurownbawse.com/uploads/1/3/0/5/130539309/4604285.pdfIn PDF document text
    • http://edwardkcampbell.net/uploads/1/3/0/6/130604756/maxozovudez-lomobeletiwusun-muvibiliw.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

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC3 8272 bytes
SHA-256: 4233b78683376182e5d023ca79d4516468d4e085c6f60903f8c402e8d2b4e021

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