PDF malware analysis — malicious · b5b77721effcacc2

MALICIOUS

PDF

46.0 KB Created: 2020-07-29 16:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5fd3c3de9007636d048f6d01ce00ceb7 SHA-1: 32e674ccde2e34ddfc239a247f5705d157184679 SHA-256: b5b77721effcacc205af9d5f0e73d0243c6a19bf56cf3aaabc6e5961ffa00027

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. Another critical heuristic identifies a PDF link farm, with many links pointing to shopify domains, likely for SEO manipulation or to host further malicious content. The document body, though heavily obfuscated, contains keywords related to 'bpsc question paper 2020 pdf', suggesting a lure to trick users into clicking the malicious links.

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.com/pify?keyword=65+bpsc+question+paper+2020+pdf
- http://files.kfnlaw.com/uploads/1/3/1/4/131453021/buvetevawosix.pdf
- http://files.clubvaultitudetexas.com/uploads/1/3/2/6/132695388/15c86f9f67bc69f.pdf
- http://files.gatheringofghouls.com/uploads/1/3/1/1/131164479/2b08d3f8345b.pdf
- http://files.gatheringofghouls.com/uploads/1/3/1/1/131164479/2b08d3f83
- https://cdn.shopify.com/s/files/1/0437/8555/2030/files/tilusopatawafetazu.pdf
- https://cdn.shopify.com/s/files/1/0436/0437/7763/files/69286642861.pdf
- https://cdn.shopify.com/s/files/1/0435/7675/4344/files/vaxezolokajurorisape.pdf
- https://cdn.shopify.com/s/files/1/0432/5349/8014/files/89726505752.pdf
- https://cdn.shopify.com/s/files/1/0434/6953/7432/files/51832649514.pdf
- https://cdn.shopify.com/s/files/1/0434/3506/5510/files/firetezuzafifixetun.pdf
- https://cdn.shopify.com/s/files/1/0434/1117/7629/files/76179237871.pdf
- https://cdn.shopify.com/s/files/1/0433/4410/1544/files/12557526367.pdf
- https://cdn.shopify.com/s/files/1/0429/6350/1222/files/vowupatukutawadizawi.pdf
- https://cdn.shopify.com/s/files/1/0431/7780/3925/files/62440248067.pdf
- https://cdn.shopify.com/s/files/1/0431/9952/9120/files/komozofelasiponunekofuvo.pdf
- https://cdn.shopify.com/s/files/1/0430/4293/0842/files/pikuwexuvuvutexesipi.pdf
- https://cdn.shopify.com/s/files/1/0440/7099/4085/files/kasamunerivojuwuji.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98223768302.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_off0000757c.bin` `8edb21e5c793564d8a326751bc854748387f87ce23b824216cf9496c3fcd4b7a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x757C	5720 bytes
`font_01_sfnt_off000088ec.bin` `93ba682b8bf3f41ff8cdaeece4a375542105ad22796b51f801c3b39d78e6aef2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88EC	10012 bytes

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