PDF malware analysis — malicious · 30e04b72107f285e

MALICIOUS

PDF

43.5 KB Created: 2020-08-05 14:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a475011ecdce815d2a1b0ebaec85206e SHA-1: b08acd43e8dade3c908d5ac60766ed3f0581d383 SHA-256: 30e04b72107f285e4ac2f5c96b6262ed73f2c0503eada693ce5519e90347aa14

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF contains a large number of embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. Another critical heuristic identifies this as a PDF link farm, suggesting a tactic to artificially inflate search engine rankings or distribute malicious links. The ML classifier strongly supports the malicious verdict. The document body itself is heavily obfuscated and appears to contain embedded URLs, further supporting the malicious intent.

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=caldera+rip+manual+pdf+espa%25C3%25B1ol
- http://files.fhpcusa.org/uploads/1/3/1/3/131383318/dopijamibafito.pdf
- http://files.dragons-poker.ca/uploads/1/3/1/6/131607805/notekudug.pdf
- http://wivepu.marykokiemcnaugher.com/uploads/1/3/0/7/130739227/samovasuzofapinin.pdf
- http://files.asasecurityagents.com/uploads/1/3/0/8/130873906/vipok.pdf
- http://jorejuw.davidmossac.com/uploads/1/3/1/3/131383314/direjizevebofud-tilojajeserumuj-roripoz.pdf
- https://cdn.shopify.com/s/files/1/0435/2085/2122/files/kifakav.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/laxefasigapabaxirasu.pdf
- https://cdn.shopify.com/s/files/1/0433/3695/8106/files/metabolisme_anaerob.pdf
- https://cdn.shopify.com/s/files/1/0428/9229/6358/files/46598422338.pdf
- https://cdn.shopify.com/s/files/1/0430/2969/2577/files/fedap.pdf
- https://cdn.shopify.com/s/files/1/0433/6946/3959/files/80658029031.pdf
- https://cdn.shopify.com/s/files/1/0429/3220/7782/files/prefixes_suffixes.pdf
- https://cdn.shopify.com/s/files/1/0429/3872/8611/files/zudasolexo.pdf
- https://cdn.shopify.com/s/files/1/0433/0956/4064/files/51164580481.pdf
- https://cdn.shopify.com/s/files/1/0434/4607/5542/files/kenmore_ultra_stitch_12_manual.pdf
- https://cdn.shopify.com/s/files/1/0439/8258/6014/files/26908369556.pdf
- https://cdn.shopify.com/s/files/1/0434/4964/7271/files/80944500686.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_off00006a33.bin` `ba2810f12d81329c48e88f528a7f3dee115136b166b794e064e06865b9c677ca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A33	5304 bytes
`font_01_sfnt_off00007be3.bin` `fb38ef14fd57b04a305f356ffb98acd51bfa56d202f53625195851cd21f80e89`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BE3	10304 bytes

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