Malicious PDF — malware analysis report

Static analysis result for SHA-256 972db854988d3adc…

MALICIOUS

PDF

38.1 KB Created: 2020-03-08 12:14:59 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2bd9c844277b023effc95db3ca0c3d2a SHA-1: 8d75b71a9b58c6a4e45a871432565f2c6fe1487b SHA-256: 972db854988d3adcae2ff0fbe22033118c23854a890bb1152b8254740e28b160
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The document body itself is heavily obfuscated but contains URLs that are likely part of this link farm. No scripts were extracted from this sample.

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://8n7.brdge.org/uploads/1/3/0/6/130620450/130620450.html#advaita+siddhi+telugu+pdf
    • http://hinterlandtreeservicesbyronbay.com/uploads/1/3/0/7/130775260/dusigopagi.pdf
    • http://www.avedaluzern.com/uploads/1/3/0/8/130813979/zitevulupugigu.pdf
    • http://blackwoodforsheriff.com/uploads/1/3/0/6/130604419/e9574a3b046.pdf
    • http://pitchstock.net/uploads/1/3/0/2/130274376/5072547.pdf
    • http://www.ollienellieboutique.com/uploads/1/3/0/8/130814559/7416900.pdf
    • http://my123math.com/uploads/1/3/0/6/130605440/de7279dd.pdf
    • http://latolaw.com/uploads/1/3/0/6/130603744/zebulanonodup.pdf
    • http://folgatefamily.com/uploads/1/3/0/5/130589085/eae3f1d49315.pdf
    • http://zkpam.dtmgt.com/uploads/1/3/0/7/130740592/toselakeje.pdf
    • http://misclasesdeespanol.com/uploads/1/3/0/5/130539516/845043.pdf
    • http://4arabi.com/uploads/1/3/0/8/130814714/vizukefofeg_sujuzebimiba.pdf
    • http://www.jewelrybygordana.com/uploads/1/3/0/9/130969936/tigidenigejawimex.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d9c.bin
8d7a3a36d6c5179c23d0cb0acfec3075bfccabf24215bb7e945404ee2cc344e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9C 7720 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.