Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e3d0595ed12f7a9…

MALICIOUS

PDF

38.9 KB Created: 2020-03-23 04:10:42 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d081d190ef4c35500484ef1a6bed7b7d SHA-1: 80534f966b9df2459df4931d85322edcd0d2d87f SHA-256: 2e3d0595ed12f7a9b68a1494cb4725abb0378087ca9be760cbe6f6626de22965
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links pointing to various domains, indicating a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs supports this assessment. The primary goal appears to be directing users to potentially harmful external content.

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://lawofficemjb.com/uploads/1/3/0/4/130435697/130435697.html#palabras+que+rimen+con+pinar
    • http://learnpersonalized.com/uploads/1/3/0/5/130551839/mupafinokoxoz_suvonamitigo_pikodizutux_gotuj.pdf
    • http://www.bellacanineconstruction.com/uploads/1/3/0/4/130435633/veziwe_jaxovefiwot.pdf
    • http://paschal77.com/uploads/1/3/0/4/130476168/pubefamizib_kuwepa_waroke.pdf
    • http://elmerservicesllc.com/uploads/1/3/1/1/131164475/7488483.pdf
    • http://maryannbylander.com/uploads/1/3/0/5/130543772/zufexiladixizef.pdf
    • http://pearmedix.com/uploads/1/3/0/4/130478205/vegonifojirum.pdf
    • http://fujita-jewelry.com/uploads/1/3/0/5/130550684/4054f.pdf
    • http://andrewwermouth.com/uploads/1/3/0/6/130621937/ea3f2863cdf.pdf
    • http://transformationspersonaltraining.com/uploads/1/3/0/5/130539457/7194437.pdf
    • http://slatteneyecare.com/uploads/1/3/0/5/130590111/besoxufazozozuseputo.pdf
    • http://oneflamingo.com/uploads/1/3/0/6/130639454/c20ad.pdf
    • http://biggimpinchoppers.com/uploads/1/3/0/2/130271042/zowulupuzuvipakazazu.pdf
    • http://ceiltech.net/uploads/1/3/0/5/130588550/weremorib_fejojugu_neladojatite.pdf
    • http://okotokshcpharmacy.com/uploads/1/3/0/7/130739878/7478023.pdf
    • http://www.bigmousetreehouse.co.uk/uploads/1/3/0/2/130272892/mevozuberisi_faginonebisopux.pdf
    • http://designfacts.net/uploads/1/3/0/6/130639934/17378.pdf
    • http://partitionnow.com/uploads/1/3/0/6/130620778/bdcdd4ef54de30a.pdf
    • http://whiteteacup.net/uploads/1/3/0/8/130814513/jewapebajobaner_zuzejokubadeves_didabavuzimom.pdf
    • http://crazydogcoffee.com/uploads/1/3/0/5/130539260/43622ab872d2d5.pdf
    • http://www.bellacani
    • 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_off00006ef1.bin
502699e84a240c1a25b649f0c01907568caad0a0766d27643082779c0eea4fd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF1 8276 bytes

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