Malicious PDF — malware analysis report

Static analysis result for SHA-256 b960907c44e9dea0…

MALICIOUS

PDF

36.7 KB Created: 2020-03-07 15:05:34 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 79bc3e99c830e9cc421c4a620ec20b5c SHA-1: 4178ae73ca4290392431ddaeb2ecb794b84abdd1 SHA-256: b960907c44e9dea07e9bbfddd1712319281b0682ff9899ab2cac178ca0208038
70 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files, suggesting a link farm or a method to distribute further malicious content. The document body mentions "Gradeup june 2019 current affairs pdf download", indicating a lure to trick users into clicking the embedded links. The presence of numerous external PDF links points towards a phishing or malware distribution campaign.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xinleyuanyulecheng.br3h.com/uploads/1/3/0/5/130551144/130551144.html#gradeup+june+2019+current+affairs+pdf+download
    • http://gem-cleaning.com/uploads/1/3/0/7/130739015/vupuxikop_lujofifokop.pdf
    • http://www.mylogancarter.com/uploads/1/3/0/4/130476747/mutigimiforuwevuvi.pdf
    • http://swearingenfamily.com/uploads/1/3/0/5/130551935/pelarob.pdf
    • http://concordat3.pleasingfood.com/uploads/1/3/0/6/130603931/tixokejibak_dizozijafufo_solewuluwitog.pdf
    • http://www.sslowy.com/uploads/1/3/0/6/130620985/2475923.pdf
    • http://24hourelectricianfl.com/uploads/1/3/0/4/130493968/xovidiwavu.pdf
    • http://moorestownlegendslax.com/uploads/1/3/0/6/130639791/7788460.pdf
    • http://susanpultman.com/uploads/1/3/0/7/130775015/3325869.pdf
    • http://marisha.ca/uploads/1/3/0/3/130313241/891651.pdf
    • http://www.vierreclothin.com/uploads/1/3/0/6/130639143/pututalolipa_ketifujexowoxo_sokanipenepok.pdf
    • http://dottfulcoidebrandochirurgiadellamano.com/uploads/1/3/0/5/130588532/sotolipojo.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_off00006404.bin
1c25265c5e0cb1d116b5f2522f5eb4c86dfc5575e6d10dfe925a1d02d60ba18a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6404 8284 bytes

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