PDF malware analysis — malicious · ab18fbbde3289b4a

MALICIOUS

PDF

41.9 KB Created: 2020-08-05 15:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 04c15925ec31573125a1cb58405ffab1 SHA-1: 39531bd87dbac1a921e9e4b44ff02efce81f8bc5 SHA-256: ab18fbbde3289b4a50ef127ca38617ba464454a0777d7e62d9bf420a11f84c27

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with a critical heuristic firing for a malicious redirector and another for a PDF link farm. The primary malicious URL identified is ttraff.ru, which is likely used to redirect users to further malicious content or phishing sites. The document body itself is largely unreadable binary data, but the presence of numerous links, including those hosted on Shopify, suggests a tactic to artificially inflate search engine rankings or distribute further malicious content.

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.ru/pify?keyword=abebe+bikila+biography+pdf
- http://labufu.lowersavannahriveralliance.org/uploads/1/3/0/7/130775727/fd299913d130b.pdf
- http://files.lifetime-memories-photography.com/uploads/1/3/1/4/131453623/bolajato.pdf
- http://files.psychiatricsocietygoa.org/uploads/1/3/1/3/131384636/bajivamoderu_futomolabiz.pdf
- https://cdn.shopify.com/s/files/1/0438/3762/0381/files/dejunosirusowimor.pdf
- https://cdn.shopify.com/s/files/1/0433/8365/2506/files/lonosugabilurisebobuwola.pdf
- https://cdn.shopify.com/s/files/1/0434/7170/0120/files/pibenenavoviwufari.pdf
- https://cdn.shopify.com/s/files/1/0430/3686/8762/files/how_to_stop_nox_from_downloading_apps.pdf
- https://cdn.shopify.com/s/files/1/0430/2585/8714/files/59965385853.pdf
- https://cdn.shopify.com/s/files/1/0431/8904/3362/files/37155731333.pdf
- https://cdn.shopify.com/s/files/1/0440/5942/6968/files/2020_calendar_template_editable.pdf
- https://cdn.shopify.com/s/files/1/0428/8145/0147/files/tusanofo.pdf
- https://cdn.shopify.com/s/files/1/0430/0718/0954/files/catfish_farming_business_plan.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37604868145.pdf
- https://cdn.shopify.com/s/files/1/0439/9969/0910/files/suwafavigidejata.pdf
- https://cdn.shopify.com/s/files/1/0437/8555/2030/files/39080467929.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_off000065ef.bin` `4646d96f335b4673b607b316b09d6f837da95de7689e1c25d21a972364952f82`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65EF	5420 bytes
`font_01_sfnt_off00007863.bin` `4c892e9583eedd53b34aac464379d54c68e214f9443ba625e04ee4f017a92fcf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7863	10096 bytes

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