Malicious PDF — malware analysis report

Static analysis result for SHA-256 2503ad0408c76130…

MALICIOUS

PDF

60.8 KB Created: 2020-03-11 08:07:28 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7127b845fa103c632571723b49547fd5 SHA-1: 3db8c5e50f36e1cdf8658ca98b3f00dd82d93cde SHA-256: 2503ad0408c76130eab9960f6013f3364452d824993b6e8f205c0871c8abbf75
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to similarly structured URLs on various domains. The heuristic 'PDF_SEO_LINK_FARM' indicates this is likely a link farm designed to manipulate search engine results or redirect users to malicious content. The embedded URLs and the document body, which contains medical terminology, suggest a lure to attract victims to these external sites. No scripts were extracted, limiting further analysis of direct payload delivery.

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://74-123-75-237.mgwnet.com/uploads/1/3/0/6/130604133/130604133.html#carcinoma+epidermoide+esofago+histologia
    • http://pibilsaddiction.com/uploads/1/3/0/7/130740210/5788434.pdf
    • http://ufunny.net/uploads/1/3/0/7/130776407/f379932d8356de.pdf
    • http://longhollow.net/uploads/1/3/0/2/130289063/kaboxusom.pdf
    • http://coinacadamy.net/uploads/1/3/0/7/130776043/4833783.pdf
    • http://homestaybuffaloniagara.com/uploads/1/3/0/6/130639554/porijuki.pdf
    • http://sourkittylabs.com/uploads/1/3/0/7/130775461/8d2d3.pdf
    • http://azmendinglives.com/uploads/1/3/0/2/130287936/2598365.pdf
    • http://brookeastormusical.com/uploads/1/3/0/6/130639342/lutepot_miwuzan_pufifejuruku_jigofewa.pdf
    • http://jonathangrove.com.au/uploads/1/3/0/4/130477228/876fa4376bd4.pdf
    • http://chopshopsaladshop.com/uploads/1/3/0/7/130739892/4054028.pdf
    • http://pinemountainlakelodge.com/uploads/1/3/0/6/130639356/ruratuvagodapek.pdf
    • http://homesproperty.net/uploads/1/3/0/7/130739930/7384664.pdf
    • http://maplepd.com/uploads/1/3/0/2/130287817/tadevitulirenujofos.pdf
    • http://redoaksfarm.net/uploads/1/3/0/3/130324044/4092200.pdf
    • http://www.saraandreahoffman.com/uploads/1/3/0/3/130313605/69222261e1.pdf
    • http://mtnstyle.net/uploads/1/3/0/5/130590180/sukite_limifosapan_limanogez.pdf
    • http://www.5324tenthavenue.com/uploads/1/3/0/2/130272921/835bba0f7b24b3.pdf
    • http://devanycatering.com/uploads/1/3/0/5/130590111/6232532.pdf
    • http://www.kathybacongreenberg.com/uploads/1/3/0/7/130776309/segakomalutazami.pdf
    • http://girlshavethepower.com/uploads/1/3/0/5/130539457/faxilupego_fufedo_jajodux_kexibolusepuz.pdf
    • http://laydenhomes.com/uploads/1/3/0/6/130620863/rokijitaza.pdf
    • http://aerosportoutfitter.com/uploads/1/3/0/6/130620234/jorowegelogukox_xubasakuk_wukofod_babudure.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_off0000c32f.bin
125e3cbc4b681ed0d2ec0a42617cc0f2a31762fa97360b8707de91915da20e06		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC32F 8896 bytes

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