PDF malware analysis — malicious · 8a34b2da0bbabbec

MALICIOUS

PDF

44.0 KB Created: 2020-08-17 01:31:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: acf22d8a27d707495afc619713fd9a6c SHA-1: 500177b30c5137a88f922d2bc0a6f85022e8fb60 SHA-256: 8a34b2da0bbabbecfb05fc0b3bc8f1ee8fd826ccfa9777f57f67b17b2f025e18

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with a critical heuristic firing for a PDF link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=choosing+wisely+guidelines+breast+cancer', which is also listed as a malicious redirector. The presence of a link farm and a malicious redirector suggests an attempt to lead users to harmful content, likely for phishing or malware distribution.

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=choosing+wisely+guidelines+breast+cancer
- http://files.bettypegues.com/uploads/1/3/1/3/131380305/8808423.pdf
- http://files.aplmuseumpasses.com/uploads/1/3/0/9/130969645/bikufikoteniwawa.pdf
- https://cdn.shopify.com/s/files/1/0431/3789/2509/files/82461457846.pdf
- https://cdn.shopify.com/s/files/1/0431/2861/9168/files/27284160731.pdf
- https://cdn.shopify.com/s/files/1/0433/0569/7438/files/sidanajijexatajerolinonu.pdf
- https://cdn.shopify.com/s/files/1/0450/3034/2806/files/cub_scout_wolf_den_leader_guide.pdf
- https://cdn.shopify.com/s/files/1/0432/9275/4076/files/fiwemumufovapizir.pdf
- https://cdn.shopify.com/s/files/1/0431/6728/5410/files/retotofilawedi.pdf
- https://cdn.shopify.com/s/files/1/0437/6179/5221/files/supolob.pdf
- https://cdn.shopify.com/s/files/1/0430/0469/0581/files/faxiwabi.pdf
- https://cdn.shopify.com/s/files/1/0439/0794/0520/files/13101263355.pdf
- https://cdn.shopify.com/s/files/1/0428/3629/5836/files/laughs_in_british_template.pdf
- https://cdn.shopify.com/s/files/1/0428/5690/6918/files/reformas_borbonicas_en_america_consecuencias_economicas.pdf
- https://cdn.shopify.com/s/files/1/0432/6513/0658/files/32213614487.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006135.bin` `7b33ecaf1464475d45739e0aa6a2cc7ada77497ac27a55339b5d84841a013e51`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6135	5440 bytes
`font_01_sfnt_off000073b5.bin` `014eb3f4d85056e5c2ebfd4c0fcb1d100cdc71cdda6ac12f6201ea1666cb9078`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73B5	9732 bytes
`font_02_sfnt_off00009501.bin` `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9501	4324 bytes

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