PDF malware analysis — malicious · 944bc40c70d52e0f

MALICIOUS

PDF

52.8 KB Created: 2020-07-30 16:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bb001aa3d762d4b64bc5efc851c85f74 SHA-1: 4d2e21378a9f4e2c90f620f70127e74a3954ecac SHA-256: 944bc40c70d52e0f77336e9178c65006810948e724072fb5d3c5a0e357df0333

150 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of these links redirects to a known malicious domain, ttraff.com, indicating a phishing or redirection attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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=role+of+chaperones+in+protein+folding+pdf
- http://files.teenchefjordan.com/uploads/1/3/1/4/131455722/6347779.pdf
- http://files.897788976207812023.com/uploads/1/3/1/6/131606733/xerotan_wosofazanotovo_dapomisi_gegawovaj.pdf
- http://files.naauhawaii.com/uploads/1/3/1/1/131163872/viwexe-neramexidasiki-lazewilibeg.pdf
- https://cdn.shopify.com/s/files/1/0431/3936/7061/files/xagowibewefetip.pdf
- https://cdn.shopify.com/s/files/1/0433/8368/5270/files/ruxugerazukejiximitusam.pdf
- https://cdn.shopify.com/s/files/1/0432/8790/4422/files/29151051017.pdf
- https://cdn.shopify.com/s/files/1/0438/2123/6386/files/34343060365.pdf
- https://cdn.shopify.com/s/files/1/0432/0506/6913/files/tugulegurapurimerirurumi.pdf
- https://cdn.shopify.com/s/files/1/0427/7580/6119/files/xekupagixoluzizeluxi.pdf
- https://cdn.shopify.com/s/files/1/0431/8402/9854/files/kosumuwokibenifo.pdf
- https://cdn.shopify.com/s/files/1/0438/1959/7981/files/fogunojafofokizogodumu.pdf
- https://cdn.shopify.com/s/files/1/0430/9437/6605/files/suzozomepuje.pdf
- https://cdn.shopify.com/s/files/1/0440/6666/8694/files/90204736019.pdf
- https://cdn.shopify.com/s/files/1/0432/6309/9040/files/89486285246.pdf
- https://cdn.shopify.com/s/files/1/0432/8649/5400/files/47261152055.pdf
- https://cdn.shopify.com/s/files/1/0432/9422/8630/files/43775487563.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdf
- https://cdn.shopify.com/s/files/1/0429/5000/0791/files/38408412704.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_off00008fe2.bin` `f3701c9d49bd5da41dbafae10a46bcf49022c31f9a4620d0a88e1aea75b5a048`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FE2	5212 bytes
`font_01_sfnt_off0000a193.bin` `6502b7955cc1b2be775a67d1fea8affb6133b1a38be715a600a93c6fe66f7694`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA193	10624 bytes

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