Malicious PDF — malware analysis report

Static analysis result for SHA-256 22e9c46c502a63b0…

MALICIOUS

PDF

44.5 KB Created: 2020-03-30 08:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5b8f1d2b249df9f9f0c169402fa184ef SHA-1: 1315ef5e9d6d6370ce82ea58de4873c3f34f4184 SHA-256: 22e9c46c502a63b08cc716a76099f6998d4a5866d9994786148661e5396e6e0f
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the 'PDF_SEO_LINK_FARM' heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The document body itself contains garbled text and what appears to be metadata from the wkhtmltopdf tool, but the primary malicious activity is the aggregation and presentation of these external URLs. 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://richter-family.rominastiebenphotography.com/uploads/1/3/0/4/130483248/130483248.html#longitudes+equivalentes+a+perdidas+de+carga+localizadas+tabla
    • http://hippiecafestore.com/uploads/1/3/0/9/130969840/636219.pdf
    • http://74-123-76-123.mgwnet.com/uploads/1/3/0/5/130545643/3794775.pdf
    • http://nicolemfraley.com/uploads/1/3/0/5/130540477/5721787.pdf
    • http://mkpowercycletraining.com/uploads/1/3/1/4/131406173/4199657.pdf
    • http://diablopepperfarm.com/uploads/1/3/0/2/130271171/mozutixof-xugusazoniwudew.pdf
    • http://peaktalk.com/uploads/1/3/0/7/130776841/gujobunowukepaje.pdf
    • http://chaosincoos.com/uploads/1/3/0/5/130590117/7035308.pdf
    • http://renoexperts.net/uploads/1/3/0/8/130874400/xuwetixilupeka-latumupagowizi-somaj-fokuki.pdf
    • http://castlepinesvillagegardenclub.org/uploads/1/3/0/8/130874435/wasezifotasojeduz.pdf
    • http://dfwhousingguide.org/uploads/1/3/0/6/130640145/jisagamaguje.pdf
    • http://palmex.ca/uploads/1/3/0/5/130551141/gevim-siwirupikututo.pdf
    • http://godatthebedside.com/uploads/1/3/1/1/131164272/lopuxuzet.pdf
    • http://prawer.de/uploads/1/3/0/2/130272859/cf3e1.pdf
    • http://preparedbirth.com/uploads/1/3/0/4/130490915/991427.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000722a.bin
112fb07472074a1b7cc545c0f5ce1471e39111318bc9d724a933566fce3a15fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x722A 10308 bytes
font_01_sfnt_off0000969d.bin
944440d1597cf73398a0089c886514f860eb0c32d24b2adba5a490f8bd5ec550		 pdf-font-stream PDF embedded font (sfnt) at offset 0x969D 3248 bytes

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