Malicious PDF — malware analysis report

Static analysis result for SHA-256 55c250aa5cc7cc65…

MALICIOUS

PDF

43.3 KB Created: 2020-05-23 08:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88e55221c7f628c79737e82ad63e1f84 SHA-1: 1dbb39278ec8c32f6bae8081bac7e9580389e51d SHA-256: 55c250aa5cc7cc6592002e2a6ee77ae7623ac7a2461872f5f8f4841982eb1c9a
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 to various domains, many of which appear to be part of a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links generated for SEO purposes. The embedded document body text also contains URLs, reinforcing the link-farming behavior. This suggests the document is designed to drive traffic to these external sites, likely for malicious purposes such as hosting further malware or phishing content.

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://kudos24.pleasingfood.com/uploads/1/3/0/7/130739476/130739476.html#digital+design+4th+edition
    • http://theartfullibrary.com/uploads/1/3/1/4/131408086/bokixoluv.pdf
    • http://healingforyoursoul.org/uploads/1/3/0/5/130590117/megiwepavavago.pdf
    • http://yongonzalezinternational.com/uploads/1/3/1/3/131379248/d69fa.pdf
    • http://ceporak.com/uploads/1/3/0/5/130551728/fevok_davumuma_lubexaw_lagidagawuwef.pdf
    • http://denvervision.org/uploads/1/3/1/4/131408614/ruwolab-fifowukevesa-gopivami-gutujakegal.pdf
    • http://sisterchristensensehteam.com/uploads/1/3/1/4/131438461/bufuj_lipapus.pdf
    • http://malkocturizm.net/uploads/1/3/0/2/130289509/kisakitataxipin.pdf
    • http://ekcoelearningcommons.com/uploads/1/3/0/7/130776790/9870947.pdf
    • http://danielswells4butler.com/uploads/1/3/1/6/131636698/4139a2e9acc.pdf
    • http://countryroadspickleballclassic.com/uploads/1/3/1/4/131452804/nemiwe-godisadep.pdf
    • http://arizonazen.com/uploads/1/3/1/3/131380295/fexapixi.pdf
    • http://mercertruckaccessories.ca/uploads/1/3/0/5/130539990/xobitudapawe-xezif-torobopez.pdf
    • http://danilopoulos.com/uploads/1/3/1/3/131380008/rizubije.pdf
    • http://egorelease.com/uploads/1/3/1/0/131070230/5fe04e807cef.pdf
    • http://hernur.com/uploads/1/3/0/7/130776509/3043445.pdf
    • http://fcfit.us/uploads/1/3/0/7/130776861/3119411.pdf
    • http://extraordinaryedits.com/uploads/1/3/0/7/130740010/9467094.pdf
    • http://handinhandlearningland.com/uploads/1/3/0/4/130483123/2799021.pdf
    • http://wondercakesatlanta.com/uploads/1/3/0/4/130488547/2195455.pdf
    • http://vintagecycling.org/uploads/1/3/0/6/130603842/2814682.pdf
    • http://stephensthings.com/uploads/1/3/0/5/130551188/dajawi_wikawetanane_jobajedos_juwunumilefip.pdf
    • http://nicolaspeer.com/uploads/1/3/1/4/131453749/6889860.pdf
    • http://skinboostlab.org/uploads/1/3/0/6/130605504/aa8734e81586961.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_off000065ff.bin
e12545523c954164420432adb00e5b895a991707c935f4710e7b6b8f605e4b25
pdf-font-stream PDF embedded font (sfnt) at offset 0x65FF 10548 bytes
font_01_sfnt_off00008a2b.bin
52cb4279c3d2ff5f00f1f53c499d1c585a0cb2753aff07f9da0ae4eea286398a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2B 16544 bytes