PDF malware analysis — malicious · f561d1f2e7fe7140

MALICIOUS

PDF

45.0 KB Created: 2020-08-18 16:08:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 56e9fee44b30050114bf723ef36cd9de SHA-1: 300240cc40ff2b39925da98f185faf02be7e659b SHA-256: f561d1f2e7fe7140cd259ee48ea14dbd0b424002724bbc49c5333bd481802eda

180 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=computer+science+and+information+technology+syllabus'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0437/4455/9258/files/59545473817.pdf'. The document also contains a critical heuristic for requesting sensitive recovery secrets, indicating a social engineering pretext. The primary attack pattern involves luring the user to click the malicious redirector.

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.
Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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/pify?keyword=computer+science+and+information+technology+syllabus
- http://jijejigu.sgcommercialmall.com/uploads/1/3/1/3/131380213/8498ba9fad.pdf
- https://cdn.shopify.com/s/files/1/0437/4455/9258/files/59545473817.pdf
- https://cdn.shopify.com/s/files/1/0431/7170/9092/files/10402099958.pdf
- https://cdn.shopify.com/s/files/1/0428/7964/7903/files/87459198801.pdf
- https://cdn.shopify.com/s/files/1/0431/4388/9058/files/5192967800.pdf
- https://cdn.shopify.com/s/files/1/0429/9977/5381/files/genubebagobemova.pdf
- https://cdn.shopify.com/s/files/1/0428/5100/8671/files/kaala_teeka_punjabi_video_song.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8428/files/lewabukosago.pdf
- https://cdn.shopify.com/s/files/1/0432/2318/7614/files/12716960497.pdf
- https://cdn.shopify.com/s/files/1/0453/2440/2843/files/96548634348.pdf
- https://cdn.shopify.com/s/files/1/0434/4096/3750/files/46230383725.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.pdf
- https://cdn.shopify.com/s/files/1/0427/8360/4903/files/12007404885.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_off00006fff.bin` `2a941f7ae6cdf9ce51526b7ec8a371017a6b0a6d7ce79faeb9244bb587a15680`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FFF	5716 bytes
`font_01_sfnt_off0000834d.bin` `f9a2b00cfeca5679d3f9ba293055eb3cc6255d0ac44dc5c202074a46740132ef`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x834D	10468 bytes

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