PDF malware analysis — malicious · ef1a2bd4cbd50e2d

MALICIOUS

PDF

50.2 KB Created: 2020-07-31 13:18:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6926d5cfa2054f468ee8cc721932012b SHA-1: 12c68f4fbd9c8cd57cd2e0f5cab0f27712ece2a3 SHA-256: ef1a2bd4cbd50e2d53d5f7b3daab906b413ccb921408ff4f8440d8a9d6c8628b

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'shoulder capsulitis exercises pdf'. The presence of many external links, including a link farm, indicates a phishing or spamming attempt to drive traffic to malicious sites.

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=shoulder+capsulitis+exercises+pdf
- http://files.harvardseducation.com.au/uploads/1/3/1/3/131379099/3910949.pdf
- http://files.yorkxl.com/uploads/1/3/0/7/130738524/1286322.pdf
- http://files.gordonbrott.com/uploads/1/3/0/7/130776131/0b717aba0121f5.pdf
- http://files.robertosmathnotes.com/uploads/1/3/2/6/132695568/babizotibej.pdf
- http://files.robertosmathnotes.com/uploads/1/3/2/6/132695568/babizotibej.p
- https://cdn.shopify.com/s/files/1/0438/8087/4139/files/41233000849.pdf
- https://cdn.shopify.com/s/files/1/0438/7710/5832/files/sobopigimugileromud.pdf
- https://cdn.shopify.com/s/files/1/0436/2049/9616/files/6971878742.pdf
- https://cdn.shopify.com/s/files/1/0435/3189/4944/files/juwatelesasadagefawizel.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/potiwabuvufepatene.pdf
- https://cdn.shopify.com/s/files/1/0430/7140/6237/files/givozojura.pdf
- https://cdn.shopify.com/s/files/1/0431/0201/1548/files/54020729958.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.pdf
- https://cdn.shopify.com/s/files/1/0433/7690/2309/files/sewazaketakonabumaxona.pdf
- https://cdn.shopify.com/s/files/1/0428/5346/6271/files/fefuzunar.pdf
- https://cdn.shopify.com/s/files/1/0432/4609/2443/files/7338276097.pdf
- https://cdn.shopify.com/s/files/1/0433/1454/4808/files/figujijuvab.pdf
- https://cdn.shopify.com/s/files/1/0432/5575/9011/files/wonomepanenukeg.pdf
- https://cdn.shopify.com/s/files/1/0431/7505/1413/files/54092347422.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_off00008763.bin` `ad345c7aa19f13727d23dd11fc8bdf1c847051e292723203628be481180d5247`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8763	5192 bytes
`font_01_sfnt_off0000991a.bin` `c716d5d1f20b51e33187c9f0e45bdf68d3c9eaee08661eb18e976ed72e118055`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x991A	10064 bytes

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