PDF malware analysis — malicious · 7d74a82a1f987e07

MALICIOUS

PDF

39.7 KB Created: 2020-03-26 05:18:21 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: bb38e56b59b2692f7d0df522414939c4 SHA-1: 0b6e2abfbaec8ab29539f31dd73da8acf671cf26 SHA-256: 7d74a82a1f987e07f85f56398c7e205ec3d85a8227ca2e43660f401aada6a510

92 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many pointing to .pdf files on various domains, indicative of a link farm or phishing campaign. The heuristic PDF_SEO_LINK_FARM specifically flags this behavior, and the ML classifier strongly supports a malicious classification. The document body text, though partially garbled, contains some of the same URLs, reinforcing the malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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://app-pof.com/uploads/1/3/0/3/130379741/130379741.html#productos+contestados+de+la+primera+sesion+cte+2018+primaria
- http://payperbiz.com/uploads/1/3/0/5/130551512/9292f03a.pdf
- http://trojanaquaticclub.org/uploads/1/3/0/2/130289796/1310181.pdf
- http://jbpettransportinc.com/uploads/1/3/0/5/130589269/67836a1b7.pdf
- http://natbayley.com/uploads/1/3/0/8/130874130/dimunajezakodepavo.pdf
- http://peachstatediesel.com/uploads/1/3/0/2/130288720/3360e9e2.pdf
- http://www.jeffleblow.com/uploads/1/3/0/6/130604923/510e8001f89fa.pdf
- http://boylepublichealth.com/uploads/1/3/0/2/130274169/f04f9fdc96a.pdf
- http://floridakeyseventsandwedding.com/uploads/1/3/0/7/130775537/4781577.pdf
- http://mikessportspage.com/uploads/1/3/0/4/130476207/08341d.pdf
- http://startsafestaysafe.com/uploads/1/3/0/7/130776542/juvidaba.pdf
- http://www.spankingmoviereview.com/uploads/1/3/0/5/130588343/1925712.pdf
- http://www.cathotelpoole.co.uk/uploads/1/3/0/4/130435597/rimusabererilav.pdf
- http://chefprive-thomasraffaelli.com/uploads/1/3/0/2/130287934/nalubifoxof.pdf
- http://www.boisecustomdecks.com/uploads/1/3/0/5/130539584/6277907.pdf
- http://legacylearningcity.com/uploads/1/3/0/6/130620728/dcb4a482.pdf
- http://careerpd.net/uploads/1/3/0/7/130740066/5805167.pdf
- http://wordsworthcentre.org.uk/uploads/1/3/0/7/130738989/8659853.pdf
- http://mta-sts.mail.kristianleehair.com/uploads/1/3/0/6/130640052/putogovavujenonetam.pdf
- http://sapphireeast.com/uploads/1/3/0/5/130543190/lopininenoledaw_nezonidivugut_tevetusuru_saropov.pdf
- http://613sold.com/uploads/1/3/0/2/130289158/9258529.pdf
- http://www.sclerallensstl.com/uploads/1/3/0/7/130740187/fagetibawiv.pdf
- http://www.precisionhomeinspectorsfl.com/uploads/1/3/0/6/130605291/3214222.pdf
- http://savoiedelacy.com/uploads/1/3/0/7/130775698/1629957.pdf
- http://indyfacepainter.com/uploads/1/3/0/5/130590461/zaziji.pdf
- http://indyface
- 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_off00006fef.bin` `336e617fb64a8b25c5326f57c645554973b428390fb183b994a34b0e930b7131`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FEF	8340 bytes

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