PDF malware analysis — malicious · 6a37659baf06356d

MALICIOUS

PDF

40.4 KB Created: 2020-08-29 14:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a2a825d7155018834a2dd53cb12b6c73 SHA-1: 4290a9d9df546890e6a5382a0ee05b05d9b976d2 SHA-256: 6a37659baf06356de8e5471019bd1ca19c19526eeeafc3806623e15ea67af7d7

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link that redirects to a malicious URL, masquerading as a free download for Adobe Reader. The PDF is structured as a link farm, with multiple external links, suggesting an attempt to drive traffic to potentially malicious sites. The ML classifier also strongly indicated maliciousness.

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.ru/wix?keyword=adobe+reader+9.0+free+download
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_512ea1efca3748809b0548294fbd1bd7.pdf
- https://static.usrfiles.com/ugd/b8c837_026f840908d74eab9d7d60ded1dfcd08.pdf
- https://static.usrfiles.com/ugd/b8c837_cc094715d9b24a4fb7148df98740b45c.pdf
- https://static.usrfiles.com/ugd/b8c837_ae516342016547748be60b94e8943dcf.pdf
- https://static.usrfiles.com/ugd/b8c837_4fac8b22f7e44a8093401ab03043d3a5.pdf
- https://static.usrfiles.com/ugd/b8c837_0dc361af2a83430a8539f059207bd5e6.pdf
- https://cdn.shopify.com/s/files/1/0431/5850/3590/files/aeotec_multisensor_6_user_guide.pdf
- https://cdn.shopify.com/s/files/1/0440/3711/1958/files/38431175457.pdf
- https://cdn.shopify.com/s/files/1/0428/6650/7943/files/63655897639.pdf
- https://cdn.shopify.com/s/files/1/0430/3313/3209/files/tokupenuziwezisunudanavon.pdf
- https://cdn.shopify.com/s/files/1/0428/8030/3267/files/wii_lego_star_wars.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8011835234.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_off0000608f.bin` `b7ab2a61e146314d9a90f92e2164b0fcd78abb8289a499851dc66863fa400eae`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x608F	5276 bytes
`font_01_sfnt_off0000729d.bin` `f526b4080148be5e97c46ad310165e4e2f380be20b0d79f9c724b5d12e8f5897`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x729D	10052 bytes

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