Malicious PDF — malware analysis report

Static analysis result for SHA-256 2505e2c92587d963…

MALICIOUS

PDF

41.6 KB Created: 2020-03-08 03:37:38 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 78c02ffeb7d47d3702e2acc3c7e75ffd SHA-1: c413cf53477abc1462b1cd4604660b41189bc356 SHA-256: 2505e2c92587d9631a650db42dcdbb0caae0595588e6598a8f9ca6b2025b74fc
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, a technique often used for SEO spam or to direct users to malicious sites. The document body, though heavily obfuscated, contains a URL that appears to be part of this link farm. No scripts were extracted from this sample, limiting the ability to determine further malicious intent beyond link distribution.

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://allergy.mediutopia.com/uploads/1/3/0/5/130589293/130589293.html#o+que+%C3%A9+exame+chlamydia+trachomatis+igg
    • http://debrartbg.com/uploads/1/3/0/2/130289272/0005a96e.pdf
    • http://greektranslate.net/uploads/1/3/0/6/130604233/3d35e3c561.pdf
    • http://nicoleolsthoorn.com/uploads/1/3/0/3/130379081/guwimasupagot_fitemisonovarir.pdf
    • http://wholehealthdiscoverycenter.org/uploads/1/3/0/5/130547689/8848802.pdf
    • http://bbitrust.com/uploads/1/3/0/5/130590432/2383707.pdf
    • http://educationforprosperity.org/uploads/1/3/0/7/130739267/linanogeziw.pdf
    • http://handymanpro.co.nz/uploads/1/3/0/3/130379821/8166957.pdf
    • http://pomajo.com/uploads/1/3/0/9/130969762/7079070.pdf
    • http://webmail.runnersrelief.com/uploads/1/3/0/6/130603814/xovexuvonuzamawero.pdf
    • http://advizher.com/uploads/1/3/0/7/130739729/8925775.pdf
    • http://buyerstreasure.com/uploads/1/3/0/4/130435644/15deaae1.pdf
    • http://j80na.org/uploads/1/3/0/7/130776561/631415.pdf
    • http://www.tiptophealthandhealing.com/uploads/1/3/0/6/130605332/9016978.pdf
    • http://boxguru.co/uploads/1/3/0/2/130289504/dd52429a5db.pdf
    • http://classicalluxuryinteriordesignarchitect.com/uploads/1/3/0/2/130289542/5d6e4290aa074.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_off000075bd.bin
c4940198c3e2eb56574c768ad90b27c18f0e30371eed6a735e465dbac50121f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BD 9968 bytes

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