PDF malware analysis — malicious · 68f759f66f8c9bab

MALICIOUS

PDF

43.5 KB Created: 2020-08-02 09:11:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7954ff94236b8c689ca21dbe2790681b SHA-1: 762feac29f2d43a8e41ae0cd94f9bb95dfae6317 SHA-256: 68f759f66f8c9bab8c165059df74beb2a00ddfab25211df12fba2b2d6921ddba

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, 'https://ttraff.com/pify?keyword=hex+beam+antenna', is identified as a malicious redirector. The presence of a link farm and a malicious redirector suggests an attempt to lead the user to malicious content, likely for phishing or malware distribution.

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=hex+beam+antenna
- http://files.jtdudrow.com/uploads/1/3/0/7/130776757/2067405.pdf
- http://files.syrianmigrationsolutionsproject.org/uploads/1/3/0/8/130874627/xujevamurezifo-lizejigadaroni-satugom.pdf
- http://files.moksayogatx.com/uploads/1/3/0/9/130969801/680d2b493b.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/5804/4823/files/ms_office_patch_for_mac.pdf
- https://cdn.shopify.com/s/files/1/0438/7710/5832/files/vibegizixapoke.pdf
- https://cdn.shopify.com/s/files/1/0431/6971/0242/files/siduloruxu.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
- https://cdn.shopify.com/s/files/1/0434/9375/2997/files/93341460129.pdf
- https://cdn.shopify.com/s/files/1/0434/4525/6352/files/boxepaselu.pdf
- https://cdn.shopify.com/s/files/1/0433/7329/7822/files/goboxuxanixab.pdf
- https://cdn.shopify.com/s/files/1/0433/5029/4678/files/foxodijixenabisag.pdf
- https://cdn.shopify.com/s/files/1/0437/1283/9834/files/21167469382.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_off00006be1.bin` `105860d2122dd954a29fc816be47ad39dc586f87fe11f06dfe527f64c9ea1577`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BE1	4696 bytes
`font_01_sfnt_off00007bcd.bin` `d9193217802a2a7c14cb4a211b4c4e5558f9a26a30c70a7831f7d7b14db37b0f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BCD	10668 bytes

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