PDF malware analysis — malicious · ae6034d0b5b5484d

MALICIOUS

PDF

42.7 KB Created: 2020-09-01 21:00:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 97f530d482b6e6ab42bdf5b883d70a37 SHA-1: f7da50668121157523554667ed33228561d17586 SHA-256: ae6034d0b5b5484dda32c610e2aefe734fdaea8367eea46d021c2dbb24942c45

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious due to a high number of embedded links pointing to a redirector service (ttraff.ru). This indicates a link farm strategy, common in phishing campaigns or for distributing further malware. The document body contains garbled text but includes the same URL found in the heuristics, reinforcing the malicious intent. No scripts were extracted, but the primary attack vector appears to be the malicious redirection links.

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.ru/pify?keyword=quantitative+test+for+carbohydrates+pdf
- https://static.usrfiles.com/ugd/b8c837_e21ebc83e53545c0992db7a8490f7f50.pdf
- https://static.usrfiles.com/ugd/921909_042ce185834d41c6af1c074654407097.pdf
- https://static.usrfiles.com/ugd/c1108c_b854136b3ed04139a2507e796f585f52.pdf
- https://static.usrfiles.com/ugd/fe83c3_72c69d935b914f80825980205e651cd6.pdf
- https://static.usrfiles.com/ugd/bf650e_6406b9a71e9c4b13b88e0e137cc80907.pdf
- https://cdn.shopify.com/s/files/1/0429/1664/2975/files/ceo_delhi_electoral_roll.pdf
- https://cdn.shopify.com/s/files/1/0432/4455/2354/files/letter_receipt_of_payment_template.pdf
- https://cdn.shopify.com/s/files/1/0434/3637/6214/files/52245434025.pdf
- https://cdn.shopify.com/s/files/1/0440/3996/2774/files/album_cut_songs_hd.pdf
- https://cdn.shopify.com/s/files/1/0431/6227/1898/files/jujexuneg.pdf
- https://cdn.shopify.com/s/files/1/0431/4447/8874/files/architectural_lighting_design.pdf
- https://cdn.shopify.com/s/files/1/0437/7139/6257/files/teri_aankhen_video_song.pdf
- https://static.usrfiles.com/ugd/ce0e6d_dcde245d85634fc3872a98b793ec7c09.pdf
- https://static.usrfiles.com/ugd/d01287_a94236f12f4a4fecbd039dd61efe7feb.pdf
- https://static.usrfiles.com/ugd/b8c837_d5a5047d9d8a4ecbba75e7760441ed38.pdf
- https://static.usrfiles.com/ugd/b8c837_af6b54b025fe416da52ec83a393ae1ad.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_off000064d9.bin` `818edf3e4a15d98f64c3eb7d0cf751975407b32dc3b7b2a251222a26f0fb6a18`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64D9	5572 bytes
`font_01_sfnt_off000077cf.bin` `d74b51d0b176924bd2a5b06d6e0e17283e0bd72f3a5ccd1a7fb0dae9074bf7f8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77CF	11544 bytes

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