PDF malware analysis — malicious · c1a40f2657aadf1c

MALICIOUS

PDF

42.1 KB Created: 2020-08-12 08:45:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a6732fb8a8a4e875970dfe298080d8cb SHA-1: 465993bc73f1455638c54a8872a1f380e0cc2b2b SHA-256: c1a40f2657aadf1c33232844c6d2f123b8ad99fff25952b47859ca3cfc16a078

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a high number of embedded links, many pointing to domains associated with SEO link farms, and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector, suggesting a lure to a phishing or malware distribution site. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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 https://ttraff.com/wb?keyword=scale%20drawings%207th%20grade%20worksheet%20pdf
- http://files.matthewpeckhamtenor.com/uploads/1/3/1/4/131483371/muver_jilimunerumuvil_gelowebipudaz_doroviz.pdf
- http://files.artofandrewchesworth.com/uploads/1/3/1/4/131483491/danudonojidas_bopovikefukir.pdf
- http://files.willhumegames.co.uk/uploads/1/3/0/8/130814682/6a313e980e85.pdf
- http://files.afd-pdx.org/uploads/1/3/1/3/131397960/tigemoduxejufaxo.pdf
- http://files.mknhp.org/uploads/1/3/1/6/131606011/varematokelubaxa.pdf
- https://cdn.shopify.com/s/files/1/0431/7026/7291/files/xapunozazogirezi.pdf
- https://cdn.shopify.com/s/files/1/0431/1557/7504/files/69264192518.pdf
- https://cdn.shopify.com/s/files/1/0430/2051/7537/files/white_album_anime.pdf
- https://cdn.shopify.com/s/files/1/0432/1204/6495/files/deuterocanonical_apocrypha.pdf
- https://cdn.shopify.com/s/files/1/0429/1595/4847/files/fipeligimotituvuvi.pdf
- https://cdn.shopify.com/s/files/1/0440/4301/0198/files/joint_distribution.pdf
- https://cdn.shopify.com/s/files/1/0434/2104/0789/files/insurgency_meaning.pdf
- https://cdn.shopify.com/s/files/1/0431/7652/5988/files/terokusarujetenaxejalev.pdf
- https://cdn.shopify.com/s/files/1/0432/2567/7982/files/gikumakixe.pdf
- https://cdn.shopify.com/s/files/1/0432/2285/9944/files/wujuwikizudukitewejapoj.pdf
- https://cdn.shopify.com/s/files/1/0431/1610/1798/files/sezifafurakemilebefim.pdf
- https://cdn.shopify.com/s/files/1/0434/5639/7464/files/visisef.pdf
- https://cdn.shopify.com/s/files/1/0428/7276/6631/files/ncert_biology_class_12_in_gujarati.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000650c.bin` `085faa1cecfd9e7f50f43b70a69b8e509ad3213f98e90d72b66126759c3e820e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x650C	5756 bytes
`font_01_sfnt_off000078ad.bin` `d37245a27bfc9c82be9c495c3a7f8fb18a808fc0a45ed19b8bdfeba6ede27e86`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78AD	9980 bytes

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