PDF malware analysis — malicious · 540cf962d471a8e8

MALICIOUS

PDF

44.8 KB Created: 2020-07-31 08:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 82c6fbfc094a6af65557b6cecc7a2a23 SHA-1: dad9ad166a0dda762cfb457f3eca7954f61adc5d SHA-256: 540cf962d471a8e806c729a3c080b76668072ffc7f5d8f47f3554536cad21ce0

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=ielts+test+pdf+with+answers'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The file also contains a PDF link farm heuristic, indicating a large number of external links, many of which are hosted on Shopify. The primary malicious URL is the most critical IOC.

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/pify?keyword=ielts+test+pdf+with+answers
- http://files.recoveringfromdomesticviolence.com/uploads/1/3/0/9/130969440/noropanit.pdf
- http://files.gabiroach.com/uploads/1/3/2/7/132741149/pobajopobepobod.pdf
- http://files.theconsciouscosmetologist.com/uploads/1/3/0/7/130739247/jojijowome.pdf
- http://files.friendchristianassembly.com/uploads/1/3/0/7/130775916/sifurob.pdf
- http://files.friendchristianassembly.com/uploads/1/3/0/7/130775916/s
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38970143778.pdf
- https://cdn.shopify.com/s/files/1/0431/6787/5228/files/fewizezex.pdf
- https://cdn.shopify.com/s/files/1/0429/8863/4266/files/poroxogolusirodum.pdf
- https://cdn.shopify.com/s/files/1/0433/0776/1819/files/72335500520.pdf
- https://cdn.shopify.com/s/files/1/0430/3791/7345/files/26167254191.pdf
- https://cdn.shopify.com/s/files/1/0430/7946/7162/files/judusowomapowotiwatuguji.pdf
- https://cdn.shopify.com/s/files/1/0431/0820/4704/files/bevaribigefisekuwutaviti.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bibekejufalakudogaloseja.pdf
- https://cdn.shopify.com/s/files/1/0433/9875/8557/files/91427523949.pdf
- https://cdn.shopify.com/s/files/1/0432/5765/9547/files/78485839120.pdf
- https://cdn.shopify.com/s/files/1/0432/1889/5010/files/9389908441.pdf
- https://cdn.shopify.com/s/files/1/0431/6574/5312/files/8531168157.pdf
- https://cdn.shopify.com/s/files/1/0432/7541/9798/files/2206959881.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_off0000727f.bin` `02ebb1232d2c27967f528ca90f1ddac23a99a6c11e94c34abdfea01e8b6414d2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x727F	4836 bytes
`font_01_sfnt_off000082e3.bin` `1976bbf2f7cc8c736642339f70dc8fc2efc55f3a3b29b12498ac938b66a24767`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82E3	10312 bytes

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