PDF malware analysis — malicious · d90a5888500bd267

MALICIOUS

PDF

40.1 KB Created: 2020-09-06 11:55:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0c6cd9810f0abf1f82c856ad59785685 SHA-1: b60d1bfad39fac700af9cca420bea390bb8eda7e SHA-256: d90a5888500bd26747f76b24b0ef501bb5ffaf892ae92b72a8cb212bbc1eb4f5

140 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=voice+note+recorder+for+pc+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily corrupted, contains fragments suggesting a lure related to a 'voice note recorder'. The presence of a callback lure heuristic further supports a phishing or scam pretext. The primary attack vector appears to be directing the user to malicious external content via the embedded links.

Heuristics 4

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
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=voice+note+recorder+for+pc+free
- https://cdn.shopify.com/s/files/1/0434/0298/5637/files/49097680630.pdf
- https://cdn.shopify.com/s/files/1/0430/7812/3674/files/vojalajij.pdf
- https://cdn.shopify.com/s/files/1/0432/2879/0946/files/amoeba_sisters_video_recap_cell_transport.pdf
- https://cdn.shopify.com/s/files/1/0437/2535/7210/files/58140645031.pdf
- https://static.usrfiles.com/ugd/35c6e2_7b8ce93ac0234583b3c1a6365dcc0426.pdf
- https://static.usrfiles.com/ugd/86319b_3037529dfdf7464a8dc0cffd30879af7.pdf
- https://static.usrfiles.com/ugd/99afdc_2d7cea629a96427db09035c107185198.pdf
- https://static.usrfiles.com/ugd/79cb75_ce2246b76a9a4cc0aec2ef901afc482f.pdf
- https://static.usrfiles.com/ugd/87d215_cf11dfb805bd4a27817e227317a8129c.pdf
- https://static.usrfiles.com/ugd/2e79a6_4b4e0ccecfb6408e9d1cf0114ddc1d49.pdf
- https://static.usrfiles.com/ugd/b09e1d_0e5d60f125864216911e357bf92eaa22.pdf
- https://static.usrfiles.com/ugd/cec570_3bee401615d7481fbf5fce2b02a529b9.pdf
- https://static.usrfiles.com/ugd/4542d9_2965373d1bcb494eb2c5f880e0aba58f.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_off0000620d.bin` `a7df7d27d627886b74b9fdddc6f207f977f9703e6807676ae421a78339e9f51e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x620D	4692 bytes
`font_01_sfnt_off0000721c.bin` `41cf4b53787e9bacb0e07b94bb7f92f7292f18602fa3903bce676e2020709a57`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x721C	9780 bytes

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