Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcfe39fd973a19cb…

MALICIOUS

PDF

38.1 KB Created: 2020-03-29 06:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5eac7ac85207a32d141ff822103741de SHA-1: 863fd179143093e17c7d8764a9fe1a42485446cc SHA-256: dcfe39fd973a19cbfc9e91cccb720ca508f8feb834d1b43f10f2b23da99c944a
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior. The document body itself is heavily obfuscated and contains some of the same URLs, reinforcing 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://74-123-73-16.mgwnet.com/uploads/1/3/1/4/131436977/131436977.html#correct+orbital+diagram+for+chromium
    • http://muffincat.net/uploads/1/3/0/2/130272348/niwumaxipuboz-daxukera.pdf
    • http://gemini-coatings.info/uploads/1/3/0/5/130590142/d9fde.pdf
    • http://fenster-linz.at/uploads/1/3/0/8/130874575/roponivevowajitekod.pdf
    • http://algomaci.org/uploads/1/3/0/5/130588625/nuxuxaletate_muzogesu.pdf
    • http://200jobs.com/uploads/1/3/0/5/130550970/1a67162cc.pdf
    • http://deliverresultsnow.com/uploads/1/3/0/7/130740573/1973598.pdf
    • http://www.boilersmakeducks.com/uploads/1/3/0/6/130639205/7138061.pdf
    • http://fusionsalonsj.com/uploads/1/3/0/6/130604892/6419823.pdf
    • http://www.creativecaliteacher.com/uploads/1/3/0/7/130739891/nakumeleb.pdf
    • http://centralstockcare.com/uploads/1/3/0/8/130814861/kosiwajerofipekigixe.pdf
    • http://littlephotobusofportland.com/uploads/1/3/0/8/130813787/d8bf834b985af.pdf
    • http://26thwardalderman.com/uploads/1/3/0/6/130639526/3943164.pdf
    • http://ghostyz.com/uploads/1/3/0/2/130272348/sijewux_waxuzam.pdf
    • http://videocontentstrategies.com/uploads/1/3/0/6/130639728/xovalul_lemebaxuwefazem.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_off00006dc6.bin
a7ca67c39d7916484155437e02454d19c3c65d615c9378903dbbc6240670b787		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC6 7472 bytes

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