PDF malware analysis — malicious · 091b84fd6d8d3063

MALICIOUS

PDF

41.7 KB Created: 2020-08-29 20:55:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b28523a93592346f8aebd729661e0ba8 SHA-1: 52e6a07c2781a8363dda6b1e891e1d4256b07e75 SHA-256: 091b84fd6d8d306305333af32b1f22fcc29db16d0212ce7423d156cdd5229919

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of external links, many of which are benign but serve to mask the malicious one. The embedded URL https://ttraff.cc/wix?keyword=conclusion+del+voleibol is the primary indicator of malicious intent, likely leading to a phishing or malware download page.

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/wix?keyword=conclusion+del+voleibol
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_d9c380340e674d38b7994a786f2529dd.pdf
- https://static.usrfiles.com/ugd/b8c837_9fd95dae90df440a9214f37e675c0616.pdf
- https://static.usrfiles.com/ugd/b8c837_65935f0f44a7452cbeb395df8629532b.pdf
- https://static.usrfiles.com/ugd/b8c837_7c4bcfd4219a421899f64d8d8e73d6f7.pdf
- https://static.usrfiles.com/ugd/90423f_27b8d849bd224083a18f2d871f2175a7.pdf
- https://static.usrfiles.com/ugd/b8c837_9ee1c28aca8949a5a4f2c35802287cec.pdf
- https://cdn.shopify.com/s/files/1/0431/9484/3298/files/94833396541.pdf
- https://cdn.shopify.com/s/files/1/0434/1619/1138/files/16126125073.pdf
- https://cdn.shopify.com/s/files/1/0431/3012/6496/files/drama_certificate_templates.pdf
- https://cdn.shopify.com/s/files/1/0437/3485/9941/files/87175021475.pdf
- https://cdn.shopify.com/s/files/1/0431/0004/5465/files/kabavenavo.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_off000067bb.bin` `306c336cf9a006066fded34d508778485dd7e10c76866e1b00de2693259196d2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67BB	4732 bytes
`font_01_sfnt_off000077dc.bin` `27b739fd17947a98b8f6805c3ec0805d33ad8e1c790b9005f24106f7b95123bd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77DC	9948 bytes

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