Malicious PDF — malware analysis report

Static analysis result for SHA-256 245ec822085fd05c…

MALICIOUS

PDF

40.7 KB Created: 2020-06-17 05:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fb047054266b23f9457e406727abced SHA-1: a974ef18752f820e0fe63cb4086ba18bce170662 SHA-256: 245ec822085fd05ca502732411054bbe21d8349258e79086dbb4f6ded284bdc5
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, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a method to distribute malicious content across multiple sites. The document body text, while containing garbled characters, includes the phrase 'Apprendre a parler russe pdf', which might be a lure. 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://mail.aimcal.org/uploads/1/3/1/3/131383602/131383602.html#apprendre+a+parler+russe+pdf
    • http://shamanacapital.com/uploads/1/3/1/4/131438500/6527846.pdf
    • http://xianshangdazhuanlunyouxi.br3h.com/uploads/1/3/0/2/130271108/takebiru.pdf
    • http://aaiallaroundinspections.com/uploads/1/3/0/5/130540033/fuberuni_vinomeselabovur.pdf
    • http://spiritfestfl.com/uploads/1/3/0/9/130969471/52463522e740657.pdf
    • http://cpanel.bugayinvestments.com/uploads/1/3/0/9/130969850/9527300.pdf
    • http://depuytraining.caresense.com/uploads/1/3/0/2/130287529/4078800.pdf
    • http://callasia.club/uploads/1/3/1/3/131398145/591392.pdf
    • http://store.jenndepaola.com/uploads/1/3/0/5/130539092/fefuzalet.pdf
    • http://mailfilter.sry.com.tw/uploads/1/3/0/5/130551856/sipevivu_niruga_wuxafadaxoli.pdf
    • http://hostmaster.pttp.org.au/uploads/1/3/0/4/130476501/subajanaxajija_jitewakizelovem_popuxutexup.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_off00005b06.bin
e3c319fe88662c2db2dc6f921e6163da669cb68fafcff40496e85f70206e55e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B06 4668 bytes
font_01_sfnt_off00006ada.bin
d958b12dd84eb456550e5d4c11925267ca43a6e8bf98f4ef6383d3e68c9d6f6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADA 14388 bytes

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