PDF malware analysis — malicious · 8ba5226305e12131

MALICIOUS

PDF

48.2 KB Created: 2020-08-21 00:30:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: eccaa79d824f9f8a55c638fb818a430f SHA-1: 499a9b3262780ae0844784d2ecae912e4738551a SHA-256: 8ba5226305e12131d8814e17cf2195e0f8651ea3030e4492b1b220834db3e302

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, identified as a link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.com/pify?keyword=pkvy+online+form', is directly linked to known malicious redirector infrastructure. While no scripts were extracted, the structure and URL firings strongly suggest a phishing or malware delivery attempt.

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.com/pify?keyword=pkvy+online+form
- http://zaral.ims-spi.com/uploads/1/3/2/6/132696056/2005150.pdf
- https://cdn.shopify.com/s/files/1/0440/7810/4728/files/45150337186.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tinoled.pdf
- https://cdn.shopify.com/s/files/1/0430/9948/8410/files/dowetawodokugawelopeted.pdf
- https://cdn.shopify.com/s/files/1/0430/7514/1794/files/paweb.pdf
- https://cdn.shopify.com/s/files/1/0432/5857/7046/files/tozadeburojenedel.pdf
- https://cdn.shopify.com/s/files/1/0432/7155/3188/files/71842837443.pdf
- https://cdn.shopify.com/s/files/1/0431/1551/1968/files/binoculars_icon_free.pdf
- https://cdn.shopify.com/s/files/1/0431/8298/1281/files/14305868295.pdf
- https://cdn.shopify.com/s/files/1/0431/7760/7324/files/56076472578.pdf
- https://cdn.shopify.com/s/files/1/0437/3456/5025/files/attestation_urssaf_formation_professionnelle_continue.pdf
- https://cdn.shopify.com/s/files/1/0429/6117/4684/files/fegeliditeti.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_off00007697.bin` `3a437e8b27b31861fb94c48ef6266b0b1301ca557dbafec74668573c50fc191a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7697	4752 bytes
`font_01_sfnt_off000086b6.bin` `5c05ee3c3def8808e944050cbf27d59b3a2d48d8798490123914cc5cb8f9f987`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86B6	14668 bytes

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