PDF malware analysis — malicious · 2f09d34f665b8d75

MALICIOUS

PDF

43.2 KB Created: 2020-08-02 13:36:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c885465fc946ba6158e2cf3f0fc88f76 SHA-1: 75b63e12fd70aa986f35d49c546f1688611b1f57 SHA-256: 2f09d34f665b8d759ca2f35d6c300f4fce930cefcb1d97ee09eb7da99aba6192

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector (ttraff.com). The document body, though largely obfuscated, contains the same URL. The presence of a link farm and the ML classifier's high confidence score indicate a malicious intent, likely to redirect users to a harmful site for phishing or malware delivery.

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=example+of+hyperbole
- http://files.myvenandi.com/uploads/1/3/1/4/131453592/naxefemixifazefetagi.pdf
- http://files.lucymortonmusic.com/uploads/1/3/0/8/130814216/a7cf747.pdf
- http://files.recoveryeducationnetwork.org/uploads/1/3/0/8/130874566/bizojugujakibu.pdf
- https://cdn.shopify.com/s/files/1/0432/9524/4452/files/19068267281.pdf
- https://cdn.shopify.com/s/files/1/0430/4257/0401/files/sefos.pdf
- https://cdn.shopify.com/s/files/1/0431/3127/3365/files/bafil.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.pdf
- https://cdn.shopify.com/s/files/1/0430/7877/9029/files/18768650897.pdf
- https://cdn.shopify.com/s/files/1/0434/7035/6637/files/47165949672.pdf
- https://cdn.shopify.com/s/files/1/0431/0505/8976/files/vesuzedazuroxalifonejipir.pdf
- https://cdn.shopify.com/s/files/1/0434/0056/0805/files/zojotuna.pdf
- https://cdn.shopify.com/s/files/1/0431/7990/1085/files/waduwug.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25424470269.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_off00006c24.bin` `72f0a6bea3b9ab16951dae2f919b8a691a3113c8a47867fdbfb0482a3a6bfcec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C24	5232 bytes
`font_01_sfnt_off00007dd0.bin` `5e7233d8294045e43f14b4e4c992918389b9aff65de131b5b72fd218229545f2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DD0	10208 bytes

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