Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcadf8f1c87cc632…

MALICIOUS

PDF

56.7 KB Created: 2020-03-18 15:51:49 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8e361833504f26df6e6ae9c2de50cf38 SHA-1: 4cdcee2367b9bdcd38d9668ae0c15193535cbc76 SHA-256: fcadf8f1c87cc6322a7005d408e3d9c54523ce09a440d4416061f80821635009
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 PDF files hosted on different domains, suggesting a link farm or SEO poisoning tactic. The document body contains garbled text and a reference to 'specific heat capacity of methanol', which appears to be a lure to disguise the malicious intent. 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://newperspectivemedical.com/uploads/1/3/0/7/130739452/130739452.html#specific+heat+capacity+of+methanol+in+kj%2Fkg+c
    • http://mta-sts.mail.coaptcontrol.com/uploads/1/3/0/6/130639854/lubite-zugemi.pdf
    • http://pelledolce-scottsdale.com/uploads/1/3/0/5/130543868/8afe1701.pdf
    • http://urzedo.com/uploads/1/3/0/6/130604264/lekigozawofeju.pdf
    • http://mylabeau.com/uploads/1/3/0/6/130621818/fesifurizipuki.pdf
    • http://myupcycled.com/uploads/1/3/0/5/130550980/4339608.pdf
    • http://sober-housing.net/uploads/1/3/0/6/130604458/7905467.pdf
    • http://mytempdomain.club/uploads/1/3/0/3/130313005/0a621a35.pdf
    • http://itsmrjack.com/uploads/1/3/0/5/130543488/turodujov.pdf
    • http://bizania.com/uploads/1/3/0/5/130550967/9308973.pdf
    • http://moody.af/uploads/1/3/0/2/130289632/4ca97fa.pdf
    • http://boylies.org/uploads/1/3/0/4/130483348/lesakapawetozot.pdf
    • http://www.polarityzug.ch/uploads/1/3/0/4/130483509/4612023.pdf
    • http://www.phoenixrisinghealthcoaching.net/uploads/1/3/0/5/130588270/fba124d23.pdf
    • http://savourit.ca/uploads/1/3/0/5/130590384/zofib.pdf
    • http://kheeterwgu.com/uploads/1/3/0/8/130814190/1496185b3f237.pdf
    • http://ilovefatjacks.store/uploads/1/3/0/4/130476034/jaruzaji.pdf
    • http://nycmiddleschoolbasketballleague.com/uploads/1/3/0/4/130435715/3887914.pdf
    • http://www.nurseinnovation.solutions/uploads/1/3/0/4/130476743/vizatulux.pdf
    • http://sigmapivu.com/uploads/1/3/0/5/130540240/xewubagom_purokanu_vudowijude_kojoxina.pdf
    • http://midgard-merchandise.com/uploads/1/3/0/3/130312961/bitebok_kowobiteruwug.pdf
    • http://mysteinertech.com/uploads/1/3/1/1/131164052/26c7b1ad3e15239.pdf
    • http://www.fernfiles.com/uploads/1/3/0/6/130639100/pexigasa-febowazefomuj.pdf
    • http://artistsofvenice.com/uploads/1/3/0/5/130550681/sevitazim.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000096a6.bin
529e1791860db4612e22f540ba2495868a51e46d59714f537f4108e3cca40252
pdf-font-stream PDF embedded font (sfnt) at offset 0x96A6 8972 bytes
font_01_sfnt_off0000b8a6.bin
885781ec91db75dc8c4a6a3d3dac0324bdfdb8f2239dab70466c62035ae072da
pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A6 4144 bytes
font_02_sfnt_off0000c59f.bin
e971cc311348d9158489ac462786f2798eb1680dc0e41c1afe5454b2c8660b3b
pdf-font-stream PDF embedded font (sfnt) at offset 0xC59F 3580 bytes