PDF malware analysis — malicious · bc5c55e6bdf75ba4

MALICIOUS

PDF

45.3 KB Created: 2020-08-18 19:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b3692131f91675214919eb13094e0edf SHA-1: fafe4e14b084025e3d565db951bd178137280719 SHA-256: bc5c55e6bdf75ba441b57e07d66eadb380f3af43b4e83dde14545d0585a838a3

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL identified is https://ttraff.cc/pify?keyword=formal+rationality+sociology+definition. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting an attempt to drive traffic to malicious infrastructure. No scripts were extracted, but the PDF structure and heuristics strongly indicate a redirection-based attack.

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.cc/pify?keyword=formal+rationality+sociology+definition
- http://powebiv.saharness.com/uploads/1/3/1/4/131453784/4876504.pdf
- http://liraw.briannephotography.com/uploads/1/3/1/8/131871991/pokopotebovojub.pdf
- http://files.indianausbr35.com/uploads/1/3/0/8/130873783/jemiropazevu.pdf
- https://cdn.shopify.com/s/files/1/0428/3544/3875/files/18918013962.pdf
- https://cdn.shopify.com/s/files/1/0434/8415/1974/files/fillable_character_sheet_5e.pdf
- https://cdn.shopify.com/s/files/1/0430/8857/6665/files/38426851557.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54183348773.pdf
- https://cdn.shopify.com/s/files/1/0435/6987/3054/files/aircraft_structures_engineering_students.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24810932871.pdf
- https://cdn.shopify.com/s/files/1/0435/5509/4677/files/96784983164.pdf
- https://cdn.shopify.com/s/files/1/0428/7345/4748/files/xonugomimajomevakopozozo.pdf
- https://cdn.shopify.com/s/files/1/0433/3142/0319/files/conjunctions_in_english_with_examples.pdf
- https://cdn.shopify.com/s/files/1/0437/2011/4327/files/59370178410.pdf
- https://cdn.shopify.com/s/files/1/0428/1047/4663/files/46109071807.pdf
- https://cdn.shopify.com/s/files/1/0432/3196/9438/files/xagobutano.pdf
- https://cdn.shopify.com/s/files/1/0434/1284/8790/files/83075090126.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_off000071db.bin` `983c493341790c953763b85fd94fcde165c08f8dcdd45e8c1297667082942ffa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x71DB	5400 bytes
`font_01_sfnt_off0000841b.bin` `10ec36b710abb1614982eae59835c6cc05529504b259a796c1d0d211a048086b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x841B	10624 bytes

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