PDF malware analysis — malicious · 7cb6b65d5315f65c

MALICIOUS

PDF

41.0 KB Created: 2020-08-16 23:22:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a18dc8ba637a11adffda4c7bd9bbb8d1 SHA-1: d14e15ac0361276403b174a2ad0f243e0cce1310 SHA-256: 7cb6b65d5315f65c7b1ffad53eeb2cecb945271629d9141ded3303e085b4448a

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs that point to a known malicious redirector and a link farm of other PDFs, suggesting a phishing or scam campaign. The document body, though partially obfuscated, contains the primary malicious URL and text that appears to be a lure for an 'injury report'. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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/pify?keyword=g+allison+injury+report
- http://lavopamu.carolinemetzlaff.com/uploads/1/3/0/8/130813765/sevoser.pdf
- http://files.beenwheredonethat.com/uploads/1/3/0/7/130739251/raxetoribev.pdf
- http://dutelejo.tracygs.com/uploads/1/3/0/8/130814328/696345.pdf
- http://gorewa.minimiel.com/uploads/1/3/1/6/131607062/672190.pdf
- http://numep.myshoppingpath.com/uploads/1/3/0/8/130813714/247113.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/8897/7815/files/kamededimosepepo.pdf
- https://cdn.shopify.com/s/files/1/0431/6259/9585/files/wekowamitevijezixuf.pdf
- https://cdn.shopify.com/s/files/1/0431/0879/4530/files/32678783991.pdf
- https://cdn.shopify.com/s/files/1/0432/9350/7737/files/76923858385.pdf
- https://cdn.shopify.com/s/files/1/0434/2883/9586/files/72105699779.pdf
- https://cdn.shopify.com/s/files/1/0434/6943/9141/files/61002499245.pdf
- https://cdn.shopify.com/s/files/1/0431/0899/1140/files/vadifudafopireg.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_off0000621c.bin` `8ea28a8bb25ab2d56b76f567d97a65ee77f4835017b7d2d7278ecc461e0536c4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x621C	5020 bytes
`font_01_sfnt_off00007350.bin` `9a5db4b76b7b5197c0745344026eadffa72be3295cb97e3d0fffece2c1f32730`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7350	10688 bytes

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