PDF malware analysis — malicious · 1016cc3bab862f41

MALICIOUS

PDF

39.5 KB Created: 2020-08-20 14:30:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2a3c6582aedaac7801d15e1b92a92b0a SHA-1: 69daee1aa9bfcd21dc930a97ebfe836662e804a4 SHA-256: 1016cc3bab862f4120d0e5a07a7fdbc18c142fb47a593b853773a6aebd795d45

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a redirector service, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains text related to 'Peppa pig printable colouring sheets' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous external PDF links, many pointing to benign Shopify domains, further supports the SEO link farm heuristic, indicating an attempt to manipulate search engine results to drive traffic to malicious sites.

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.cc/pify?keyword=peppa+pig+printable+colouring+sheets
- http://tezigor.joshlewisjournalism.ca/uploads/1/3/2/6/132682093/2fca5.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0437/0087/9510/files/wumamatopominowabig.pdf
- https://cdn.shopify.com/s/files/1/0432/5628/3296/files/battle_royale_movie_720p.pdf
- https://cdn.shopify.com/s/files/1/0434/1222/6200/files/kupepunefa.pdf
- https://cdn.shopify.com/s/files/1/0431/0630/4153/files/virulence_factors_of_fungi.pdf
- https://cdn.shopify.com/s/files/1/0440/1207/7206/files/jebedatove.pdf
- https://cdn.shopify.com/s/files/1/0430/8362/8708/files/lupamojom.pdf
- https://cdn.shopify.com/s/files/1/0434/4276/5976/files/37470519033.pdf
- https://cdn.shopify.com/s/files/1/0432/7650/1158/files/jemipunuzu.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_off00005dce.bin` `6268d8e6fe0c31b66572d8fd94c2e1f53e763a2524be4dc03640710831d815f9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DCE	5336 bytes
`font_01_sfnt_off00006fdc.bin` `cc7c8c9a1b626ec7e70a7603b39de4f9bdf8b4c5997c4574d53608059e177c17`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FDC	9952 bytes

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