PDF malware analysis — malicious · ff1890fe289db205

MALICIOUS

PDF

53.3 KB Created: 2020-09-14 02:50:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 04d249e962aa014728a00a45e8f5d539 SHA-1: 248f5b14a4901f0f5a9f428d99ed18e23873a23a SHA-256: ff1890fe289db205d701d15976dd16aaeb90a65c7d23daabebbc6f4327f81dae

150 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=lab+safety+and+equipment+worksheet+answers'. The document body, though heavily obfuscated, contains text related to 'Lab safety and equipment worksheet answers', suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.me/wix?keyword=lab+safety+and+equipment+worksheet+answers
- https://cdn.shopify.com/s/files/1/0428/9203/4211/files/siviwarananiwufab.pdf
- https://cdn.shopify.com/s/files/1/0431/1918/1978/files/car_bill_of_sale_ri.pdf
- https://cdn.shopify.com/s/files/1/0427/8566/9279/files/cambridge_dictionary_of_philosophy_3rd_edition.pdf
- https://static.usrfiles.com/ugd/f84671_14596d8fb57647f4ad27a604791d0c49.pdf
- https://static.usrfiles.com/ugd/e481ce_465d197863ce410e9c4b78d57a3ea01e.pdf
- https://static.usrfiles.com/ugd/2d797c_dd15527d8f8446a5b8d7bfd681138b08.pdf
- https://static.usrfiles.com/ugd/b0cd75_b8c1dcda2e9541fc8bd5d2eed7314c55.pdf
- https://static.usrfiles.com/ugd/80bfa9_f73d52b789594650ae3cc7e7d868080c.pdf
- https://cdn.shopify.com/s/files/1/0434/2562/8327/files/usa_charater_arcade.pdf
- https://cdn.shopify.com/s/files/1/0431/9114/0510/files/78232832602.pdf
- https://cdn.shopify.com/s/files/1/0431/4362/6912/files/tamupowabepe.pdf
- https://cdn.shopify.com/s/files/1/0432/1234/1412/files/7283513762.pdf
- https://static.usrfiles.com/ugd/964009_bf33ffb6910446888623d63309e8f1e3.pdf
- https://static.usrfiles.com/ugd/c0a468_06539997bc5944de92be837268a5432f.pdf
- https://static.usrfiles.com/ugd/a72fa8_7d833c369e374529b046c6359d637935.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_off00008686.bin` `a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8686	2828 bytes
`font_01_sfnt_off00009080.bin` `49e301fd58411aa62579891c11ca922fd09b2521d4764451fd29ece0bdaae3e2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9080	5712 bytes
`font_02_sfnt_off0000a3de.bin` `134b63f50e2b5d05b44a80352388de50937fdeb8c037ed2bcdaab9d9cf77039d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA3DE	9852 bytes

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