PDF malware analysis — malicious · db2b18e224c1ce20

MALICIOUS

PDF

53.8 KB Created: 2020-08-02 14:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 474542324dc9d29564e13b41bd15c841 SHA-1: fea43c04b42a757da08cf0ad716411249fec50eb SHA-256: db2b18e224c1ce20ba03fd79b236f1c6327bbb1b7df76a45b1488a6f7042bb07

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure document disguised as a calculus textbook solution manual. It embeds numerous links, including one pointing to a known malicious redirector at https://ttraff.ru/pify?keyword=stewart+calculus+7e+solution+manual+pdf. This redirector likely leads to a malicious payload or phishing page. The presence of a link farm suggests an attempt to game search engine results for malicious distribution.

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=stewart+calculus+7e+solution+manual+pdf
- http://files.vetmobileclinic.com/uploads/1/3/1/3/131398532/tabumokuwev.pdf
- http://files.europeanmatchracetour.com/uploads/1/3/2/6/132682745/6515867.pdf
- http://files.teamroadrunnerapp.com/uploads/1/3/0/7/130738803/28612afb0.pdf
- http://files.elevateciereview.com/uploads/1/3/2/7/132741136/002fb9.pdf
- http://files.holisticlifeabundance.com/uploads/1/3/1/8/131856392/566506fc3faefbb.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72710717911.pdf
- https://cdn.shopify.com/s/files/1/0428/2135/3635/files/mezadavufupowedu.pdf
- https://cdn.shopify.com/s/files/1/0428/8184/3353/files/pigaxok.pdf
- https://cdn.shopify.com/s/files/1/0430/7098/0245/files/giduzivimelowegeluva.pdf
- https://cdn.shopify.com/s/files/1/0434/4859/8678/files/zugoro.pdf
- https://cdn.shopify.com/s/files/1/0432/3131/4077/files/dekobemodevabazifaluribeb.pdf
- https://cdn.shopify.com/s/files/1/0428/5382/6726/files/40856134824.pdf
- https://cdn.shopify.com/s/files/1/0429/5901/2006/files/12916910043.pdf
- https://cdn.shopify.com/s/files/1/0429/8774/9525/files/36180352165.pdf
- https://cdn.shopify.com/s/files/1/0430/9286/9281/files/bifamatejeza.pdf
- https://cdn.shopify.com/s/files/1/0434/7677/9174/files/jotin.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007a8c.bin` `1bbe662d7b7ab8dfd46870862d38de18d2312bfa85abb657c654ede8aed307ce`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A8C	7560 bytes
`font_01_sfnt_off000093f0.bin` `4797cd0fe46ac3b69480809fc711d82430f3d858fc6d3b7b5d98f9f9c6483812`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93F0	5576 bytes
`font_02_sfnt_off0000a6ec.bin` `204cae5dbfa9015332940134ce8a8899761e3af69f4ed137f96ea36d370527a2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA6EC	10212 bytes

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