PDF malware analysis — malicious · 4891361060941590

MALICIOUS

PDF

50.3 KB Created: 2020-08-13 22:52:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 649c14f98ebe38fc71c25dc9d112a53a SHA-1: 78e859cb037f9e035927ac87049b99906228115f SHA-256: 4891361060941590f0f5721ceb5c8dec36ddb1ea5e9e6c5589343a48b6d0bbae

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. Crucially, one embedded link redirects to `https://ttraff.ru/pify?keyword=fssai+answer+key+pdf+2019`, which is flagged as a malicious redirector. The document body text also contains the same lure, indicating a social engineering attempt to trick users into clicking the malicious link.

Heuristics 3

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.
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=fssai+answer+key+pdf+2019
- http://files.jonathanepley.com/uploads/1/3/0/8/130813985/4850533.pdf
- http://files.musicalkitestring.com/uploads/1/3/1/1/131164476/8921238.pdf
- http://files.allthingsdunham.com/uploads/1/3/0/7/130739510/5015553.pdf
- http://files.alrajabahrain.org/uploads/1/3/0/7/130775292/rilinejilibul.pdf
- https://cdn.shopify.com/s/files/1/0438/4063/5042/files/85224840377.pdf
- https://cdn.shopify.com/s/files/1/0429/8981/3909/files/27238040439.pdf
- https://cdn.shopify.com/s/files/1/0432/0077/4307/files/mechanical_behavior_of_materials_meyers_solutions.pdf
- https://cdn.shopify.com/s/files/1/0434/5665/9621/files/20633881603.pdf
- https://cdn.shopify.com/s/files/1/0430/0944/1953/files/vumesererejelatitepapim.pdf
- https://cdn.shopify.com/s/files/1/0428/8777/4367/files/manowosusukewoxufazilo.pdf
- https://cdn.shopify.com/s/files/1/0428/0962/2691/files/67329414420.pdf
- https://cdn.shopify.com/s/files/1/0435/2340/8032/files/milapizesomukojafifiti.pdf
- https://cdn.shopify.com/s/files/1/0434/6521/2066/files/rarojolezipogewazorame.pdf
- https://cdn.shopify.com/s/files/1/0429/6615/5430/files/jomutimibumaxisoga.pdf
- https://cdn.shopify.com/s/files/1/0434/4843/4840/files/wuduwiberedi.pdf
- https://cdn.shopify.com/s/files/1/0437/4783/6065/files/malos_habitos_alimenticios_en_universitarios.pdf
- https://cdn.shopify.com/s/files/1/0443/4483/6252/files/namaz_ka_tarika_download.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008593.bin` `20c18575a9ca15308edee9c85512c25c8028748f324ceac1285b284324108131`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8593	5696 bytes
`font_01_sfnt_off00009927.bin` `81b7bd873b12a395352a2f1360a81a96b0b23c8c757dd2aaf85fefb3eb49b4e8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9927	10384 bytes

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