PDF malware analysis — malicious · 6e703bb4ff47e1a9

MALICIOUS

PDF

54.4 KB Created: 2020-10-31 05:34:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b96e564256bfcec273bd247bf3eb7ef5 SHA-1: bc4e3a2d026e31d0789cb6b5469466ffaf0a559a SHA-256: 6e703bb4ff47e1a93a3cdf4809a6f4da08b54c916f7cd655ae6cf5ac4529d808

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, which is likely intended to lead the user to a phishing or malware download site. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of multiple PDF links to external sites, some of which are unknown or benign, indicates a link farm strategy, potentially for SEO poisoning or distributing further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
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 https://ttraff.me/123?keyword=rappelz+soul+pet+belt+skills
- https://cdn-cms.f-static.net/uploads/4380079/normal_5f982990a1633.pdf
- https://cdn-cms.f-static.net/uploads/4370542/normal_5f96f00309919.pdf
- https://cdn-cms.f-static.net/uploads/4383702/normal_5f9ac962c6c02.pdf
- https://telexetobowu.weebly.com/uploads/1/3/4/3/134339901/995348.pdf
- https://xesapidad.weebly.com/uploads/1/3/4/3/134346602/lenogumaz.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/nokiva/poraga.pdf
- https://uploads.strikinglycdn.com/files/17670ebb-9754-4126-9315-6ece3d09c65c/2005_scion_xb_owners_manual.pdf
- https://s3.amazonaws.com/befevifa/mojaruture.pdf
- https://s3.amazonaws.com/fatikonavori/urban_poverty_alleviation_programmes_in_india.pdf
- https://s3.amazonaws.com/bevarolimesale/8821554853.pdf
- https://cdn.shopify.com/s/files/1/0480/7894/6468/files/abbott_symfony_toric_calculator.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00009556.bin` `e4ac98ec6a1678d081ba9542f15c62e07330455753f547d7f6d8b356dd4574ee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9556	4976 bytes
`font_01_sfnt_off0000a660.bin` `d0dae6f288949f48cfb2fe4b14e176cdefcef7ebfa3d1860fddb67c37ae163d6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA660	11328 bytes

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