PDF malware analysis — malicious · 69aaa20220b5e044

MALICIOUS

PDF

42.2 KB Created: 2020-08-19 10:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e237cb6522e2e2c1f9049c05d55d04d1 SHA-1: 1c46342e950b1a01f9d961d077db82b746dfa10b SHA-256: 69aaa20220b5e04487a2446f0acd8b2968094a041039ca526b58f97785a9648d

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a critical redirector link pointing to malicious infrastructure. The document body, though heavily obfuscated, contains the URL that is likely used to lure victims. The presence of numerous PDF links suggests an attempt to distribute further malicious content or engage in SEO manipulation.

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=firefox+activex+control
- http://files.strongagriculturalsociety.com/uploads/1/3/1/1/131163533/bunojazananij-salit.pdf
- http://files.bsdforms.org/uploads/1/3/0/7/130739522/2552519.pdf
- http://xatozawab.imyourinsurancelady.com/uploads/1/3/1/3/131398285/pizawa.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://cdn.shopify.com/s/files/1/0431/8615/9767/files/921621375.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdf
- https://cdn.shopify.com/s/files/1/0433/6828/4319/files/arm_microcontrollers_programming_for_embedded_systems.pdf
- https://cdn.shopify.com/s/files/1/0429/2024/7462/files/33278034771.pdf
- https://cdn.shopify.com/s/files/1/0430/3349/3658/files/jaxevuxigiravume.pdf
- https://cdn.shopify.com/s/files/1/0429/5763/5743/files/40013627104.pdf
- https://cdn.shopify.com/s/files/1/0427/4189/1238/files/xedorujago.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005d38.bin` `7ea26a1847df70fdc5052754165fd2d89ff784afd8c1af2574e7caf7d530ae32`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D38	4568 bytes
`font_01_sfnt_off00006cc7.bin` `21e3b154c7285ffef2b68a8efbf64ef7d417e6401c6cab00ada1fff27a6f8936`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6CC7	9816 bytes
`font_02_sfnt_off00008e5b.bin` `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E5B	4324 bytes

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