PDF malware analysis — malicious · ea83c200d5610e65

MALICIOUS

PDF

55.3 KB Created: 2020-03-30 13:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: 348f9ec0101f96bac8204a57fe186336 SHA-1: e647c5249767a37b3609eb263f19aa5d667ea856 SHA-256: ea83c200d5610e654e63f530dccd36011d240fab2e67d307bd69a74e3d6f1420

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting users to these external sites, which are likely hosting malicious content or further phishing attempts. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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://bailigongyulechengshoujiban.br3h.com/uploads/1/3/0/6/130621152/130621152.html#martin+heidegger+sein+und+zeit+pdf
- http://uintahonlinek8.com/uploads/1/3/0/4/130436261/zoxad_musudagesawugo.pdf
- http://yersmev.com/uploads/1/3/0/2/130271179/5183049.pdf
- http://declanporter.com/uploads/1/3/0/5/130590698/vigulutibanojup.pdf
- http://carmellawnpros.com/uploads/1/3/0/3/130323761/xisubamon.pdf
- http://chocofriends.com/uploads/1/3/0/4/130477839/3916333.pdf
- http://www.aims.aiia.org/uploads/1/3/0/8/130874394/7b789fb4af38cee.pdf
- http://hawkcare.net/uploads/1/3/0/3/130313405/4b533399059c.pdf
- http://mycalverton.com/uploads/1/3/0/6/130622104/4553240.pdf
- http://hostmaster.premierweb.org/uploads/1/3/0/6/130621467/teragedir.pdf
- http://weimakleiner.com/uploads/1/3/0/4/130477490/silujib_lebitexu_xomalotajowo.pdf
- http://positivetransportation.net/uploads/1/3/0/7/130739573/7232379.pdf
- http://myaction-portal.com/uploads/1/3/0/2/130270826/7bd6a0587da46.pdf
- http://conroehousecleaning.com/uploads/1/3/0/7/130775251/deneb-kunodu-xozazijiketizo.pdf
- http://northalabamavinylspecialists.com/uploads/1/3/0/7/130775791/9794167.pdf
- http://coreycieslak.com/uploads/1/3/0/6/130621057/3e58a3de9d.pdf
- http://clumsybutcute.com/uploads/1/3/0/7/130775527/detefun-denetakaw-bolilorekirapen.pdf
- http://chipsincsu.com/uploads/1/3/0/8/130814387/5948936.pdf
- http://mrsantangelo.com/uploads/1/3/0/5/130551325/c1cafbf4a.pdf
- http://hplministries.org/uploads/1/3/1/3/131379343/3213597.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000adc8.bin` `0ceb08ab65a5839437571c13968af8db6f04abffc3047ea4c1803106e37a77e3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xADC8	9036 bytes

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