PDF malware analysis — malicious · 4d87fec0dab278d2

MALICIOUS

PDF

47.2 KB Created: 2020-04-01 17:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: 78d56e8e9a97c633c291578602e06158 SHA-1: 2bcc46ee3e92ebaaa72a8834205d4b7c117cab7d SHA-256: 4d87fec0dab278d26f253f5863f3291203023ad945aaacca867e35e1cda5f2ef

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, 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 what appears to be metadata from the wkhtmltopdf tool, but the primary malicious activity is the distribution of these numerous external links. 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://vidhimashetty.com/uploads/1/3/0/3/130379427/130379427.html#propiedades+aproximacion+normal+binomial+media+varianza+y+desviaci%C3%B3n+est%C3%A1ndar
- http://learnwithstarc.com/uploads/1/3/0/5/130589399/2839b21.pdf
- http://www.shannonbrownactor.two9productions.com/uploads/1/3/0/8/130813777/7042100.pdf
- http://francoisetmimi.com/uploads/1/3/1/1/131164118/ed9e57558988.pdf
- http://kbopureheartsministry.org/uploads/1/3/0/7/130776403/309654.pdf
- http://atoz-builders.com/uploads/1/3/0/8/130814009/kinisukux_letitafilexaje.pdf
- http://globalgraderealestates.com/uploads/1/3/0/3/130323286/12e99465b2d1e23.pdf
- http://finalnightmare.com/uploads/1/3/0/2/130289663/4812840.pdf
- http://officedecolombia.co/uploads/1/3/0/5/130590469/solufalutasutitosupo.pdf
- http://izzaizelan.com/uploads/1/3/0/7/130740224/acaf3f9876.pdf
- http://bloomwithgraceblog.com/uploads/1/3/0/2/130291592/xisaladinun.pdf
- http://embarkdancetheatre.com/uploads/1/3/0/4/130476506/ribome_linepeli.pdf
- http://mrhastieptyltd.com/uploads/1/3/0/9/130969474/rarosanupaj_jusomuge_saxeji_saginarigobida.pdf
- http://foodstream.info/uploads/1/3/1/3/131384044/xeridijugepuv_jajijukim_vigenef.pdf
- http://cborgescobrancas.net/uploads/1/3/0/5/130588856/rabivelelanugoz.pdf
- http://1e-mail.com/uploads/1/3/0/2/130288684/ralupefibeja.pdf
- http://5starjanitorialservices.org/uploads/1/3/0/9/130969983/b34383fe.pdf
- http://sundaygroceries.com/uploads/1/3/0/6/130605164/milimewip.pdf
- http://cadeaudlove.com/uploads/1/3/0/8/130813756/2256253.pdf
- http://infinitopunto0.com/uploads/1/3/0/4/130488243/sudebif.pdf
- http://himalayansaltlampusa.com/uploads/1/3/1/0/131070645/77a290.pdf
- http://iamkennywilson.com/uploads/1/3/0/6/130621503/287e4dd930fcf2.pdf
- http://aaaheating-acrepairtolleson.com/uploads/1/3/0/6/130622084/funokufosuw-fifujomutizene-jogijafefudaja-fupomefebanewaz.pdf
- http://aaaheating-acrepairtolleson.com/uploads/1/3/0/6/130622084/funokufosuw-
- 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.

Filename	Kind	Source	Size
`font_00_sfnt_off00008643.bin` `40c71a5bb3311064a153507fb4cfda278b2b3b608e55fa72ee528f0daf2b44c6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8643	10316 bytes

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