Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30a136c1a10ecdc…

MALICIOUS

PDF

45.2 KB Created: 2020-07-21 04:03:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c445abebd883d665c7c5e7a09c634405 SHA-1: a9abffe2de1d97267e6080406a77232df6c88d7b SHA-256: b30a136c1a10ecdcad0ad84d8d6118a381669f9674c255d88a84079b5b27cae6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the ttraff.com URL, which likely serves as a redirector to a phishing or malware site. The embedded links, including those hosted on Shopify, are part of a link farm strategy to increase visibility and potential clicks.

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=frecuencia+cardiaca+perros+pdf
    • http://files.englishwithsam.com/uploads/1/3/1/6/131606502/054e15a69.pdf
    • http://files.eugenemontgomery.com/uploads/1/3/1/4/131438766/zesolabugilobe.pdf
    • http://files.tameriamartinezclay.com/uploads/1/3/1/0/131070112/7026544.pdf
    • https://cdn.shopify.com/s/files/1/0428/2269/7126/files/papiwegejobukugarexel.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/59082830734.pdf
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/49498403594.pdf
    • https://jozuzilag.files.wordpress.com/2020/07/25549487876.pdf
    • https://gosijanasi.files.wordpress.com/2020/06/10868586252.pdf
    • https://xupubof.files.wordpress.com/2020/06/27826761484.pdf
    • https://sofifetipi.files.wordpress.com/2020/06/54184734131.pdf
    • https://pezelid.files.wordpress.com/2020/07/14114339601.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/merukasaxakax.pdf
    • https://cdn.shopify.com/s/files/1/0434/6095/2229/files/6106806597.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/xapekaza.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/82452214530.pdf
    • https://cdn.shopify.com/s/files/1/0433/8509/4307/files/tunetovegexopo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigemeziguvego.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/94338179539.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.

FilenameKindSourceSize
font_00_sfnt_off00007220.bin
d70ebb4aaea16fa656166c22f00dfe89d527af4ac9880d9ef27043bf0217b888		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7220 4872 bytes
font_01_sfnt_off000082ab.bin
1825dcb900b924b2ed0207d8d2964aa454f8cb4015439c9734d924b1fc645561		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82AB 10980 bytes

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