PDF malware analysis — malicious · 871d932c8058724e

MALICIOUS

PDF

42.3 KB Created: 2020-09-14 07:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 00237a9353ddd8c3caa82d11733b3440 SHA-1: abd27acaff7aa568c2780196c21b625f38ea7872 SHA-256: 871d932c8058724ee1cb3f4533fa99666e40ea25b0b5988a167d819f5b531af5

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=the+last+necromancer+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are hosted on suspicious domains. The ML classifier also strongly indicated maliciousness. The document body appears to be obfuscated or corrupted, but the presence of multiple suspicious URLs strongly suggests a malicious intent, likely for phishing or malware distribution.

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.ru/wix?keyword=the+last+necromancer+pdf
- http://files.auzpexbeauty.com/uploads/1/3/0/7/130739918/xafenibika_netezifofawov_lejixopagem.pdf
- http://files.risingravenband.com/uploads/1/3/1/3/131384018/buvab.pdf
- http://pogefow.aspireinsurancegroup.com/uploads/1/3/0/7/130776131/bokuxake-detubuv.pdf
- http://tuwemesi.southernfisheries.org/uploads/1/3/1/4/131437308/9197c8283.pdf
- http://vowupoj.mirrorimagedanceteam.com/uploads/1/3/1/3/131380213/terokano_mamevagiri_wuneluwuwuzikut_bizirijuwozeva.pdf
- https://static.usrfiles.com/ugd/a44510_77e3188ad45c4282af8f0e0b3352a036.pdf
- https://static.usrfiles.com/ugd/8a419d_bbcc8cb22cf94f91b4f278cda5d2f7db.pdf
- https://static.usrfiles.com/ugd/c4ccc4_5bed26bfc7ab4c5e97986b27298125b4.pdf
- https://static.usrfiles.com/ugd/f6a907_fd959f91d25145ef8b8ae962f34ecc26.pdf
- https://static.usrfiles.com/ugd/b65acf_d9c1098cd63c4caba98d374db69403cf.pdf
- https://static.usrfiles.com/ugd/e02969_ad25ac41742545f5bf02ea0eeb2ecc4b.pdf
- https://static.usrfiles.com/ugd/b8c837_847600236a9d42ee85982da61d0b7367.pdf
- https://static.usrfiles.com/ugd/ea5d7b_52db215b6b4a41e7871c11d82c10b5c3.pdf
- https://cdn.shopify.com/s/files/1/0430/9739/1261/files/39959878414.pdf
- https://cdn.shopify.com/s/files/1/0461/6405/0083/files/100_palabras_mas_usadas_en_ingles.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_off000064bf.bin` `b74f54e8b51af6d304b9ce32e4c9c29cbf08134f81a2cea2c60fc3f48bc396c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64BF	5344 bytes
`font_01_sfnt_off000076bd.bin` `9d58262774eec53bf34275f91354541a6d4d7425e29f03a57e8c9e22d77595f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76BD	12336 bytes

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