PDF malware analysis — malicious · d1a5bef8013fec99

MALICIOUS

PDF

45.9 KB Created: 2020-08-31 08:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bad53877d48bb6bbf43fe5fce2e1babd SHA-1: 3b240a8a4a261ec7f1c815269fbe9799ff251f99 SHA-256: d1a5bef8013fec9931f063decd648e3ebaaefe340c25e6b3d816fa607e88a014

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=el+plan+revolucionario+pdf'. This URL is likely part of a phishing or scam campaign designed to lure users to malicious content. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure. The presence of numerous other PDF links, while many resolve to benign Shopify URLs, suggests a link farm tactic to obscure the malicious destination.

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.cc/wix?keyword=el+plan+revolucionario+pdf
- https://cdn.shopify.com/s/files/1/0431/1249/7312/files/75025411833.pdf
- https://cdn.shopify.com/s/files/1/0433/6818/6015/files/19535570886.pdf
- https://cdn.shopify.com/s/files/1/0430/0115/1651/files/gawenoguso.pdf
- https://cdn.shopify.com/s/files/1/0434/3293/5574/files/3920113907.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
- https://cdn.shopify.com/s/files/1/0437/9777/4497/files/c_c_music_factory_i_found_love.pdf
- https://cdn.shopify.com/s/files/1/0428/5916/7900/files/formatting_in_discord.pdf
- https://cdn.shopify.com/s/files/1/0466/7808/1701/files/background_keren_png.pdf
- https://static.usrfiles.com/ugd/b8c837_b556b6a3dcc648a1869f666da74c7f8d.pdf
- https://static.usrfiles.com/ugd/4d935e_ad55eb0474c34bf192e60b5adc871ee7.pdf
- https://cdn.shopify.com/s/files/1/0434/0793/3603/files/automobile_engineering_textbook_in.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/14981909947.pdf
- https://cdn.shopify.com/s/files/1/0433/4151/2855/files/85433216845.pdf
- https://cdn.shopify.com/s/files/1/0431/3032/3101/files/gisenekodug.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/
- https://cdn.shopify.com/s/files

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000063dd.bin` `ee37dfc6ab43018c32a641c0ae427e1fe9e4397d323f26e05ecaee03c55c968d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63DD	4988 bytes
`font_01_sfnt_off000074a9.bin` `060a17e936bf67a546fd54981e336a2b013b392fc0980aa42f8d75cfe7dfaaef`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x74A9	6204 bytes
`font_02_sfnt_off000083ad.bin` `4781d8c52f86f652b9a61090688ea814a58732d16ffe2f8624ae7840863e34a2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83AD	11324 bytes

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