Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9ebc35d5851312d…

MALICIOUS

PDF

49.1 KB Created: 2020-05-23 08:16:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fef9795c0d11bbdb49ac75ae558bb387 SHA-1: 1bf61c8e7d3569245251c4dd882c72085a4181f2 SHA-256: c9ebc35d5851312de0c43dcd2a994c46fa683c457d774e32cfb81f54575939b7
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files. The document body text, though partially corrupted, suggests a lure related to 'the story of philosophy pdf free download'. This indicates a link farm or SEO poisoning attack designed to drive traffic to malicious content. No scripts were extracted from this sample.

Heuristics 3

  • 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
  • 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://ruiboyulechengguanwang.br3h.com/uploads/1/3/0/9/130969220/130969220.html#the+story+of+philosophy+pdf+free+dow
    • http://xeosintl.com/uploads/1/3/0/6/130620222/faliwopiwovijo.pdf
    • http://austinpanthersgarcia.com/uploads/1/3/1/3/131379099/9287555.pdf
    • http://mygrassfedmeat.com/uploads/1/3/1/6/131606125/morenaf.pdf
    • http://theniversons.com/uploads/1/3/0/6/130605351/7ea861.pdf
    • http://ksolutionautocare.com/uploads/1/3/1/3/131382081/sugowojaxubekotusuzu.pdf
    • http://midwestalehouse.com/uploads/1/3/0/5/130545278/pejinowe_kurarolakijex_patitavenefi_sefapevonug.pdf
    • http://mx.churchillpublishing.net/uploads/1/3/1/3/131380297/4104574.pdf
    • http://euro-bdf.net/uploads/1/3/1/3/131380251/kotifadegenefenunu.pdf
    • http://smithandcoservices.co/uploads/1/3/0/2/130291809/vakagatukuvirinureju.pdf
    • http://srqmark1045.com/uploads/1/3/0/6/130603715/vitubimefuvuz.pdf
    • http://amylaneromance.com/uploads/1/3/0/7/130739962/7966658.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006985.bin
c48609903b587e41a36e63d46800c3489cd62dd687bde0fd9a0ca60fd6b3ddb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6985 2596 bytes
font_01_sfnt_off00007507.bin
7bb91423d63eb6bd7c2657278979848d60b7d38679106ec23dbd755ba6ab3d32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7507 2320 bytes
font_02_sfnt_off00007f57.bin
fffd79cf44286549130f4eca95d0f8c8c19601c763a3e2de710dc30f7606b7b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F57 10536 bytes
font_03_sfnt_off0000a3ac.bin
2e8651a98ee540baed1d0812be76902adedc5a023f2840d07169146f84cbce23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3AC 5804 bytes

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