Malicious PDF — malware analysis report

Static analysis result for SHA-256 c79f892447ece82e…

MALICIOUS

PDF

43.4 KB Created: 2020-07-31 20:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcb2b063409d02163ceb80262fa8a426 SHA-1: 08ad981c26e4a02e9cd6b7034205143e0a13b61c SHA-256: c79f892447ece82e27881e1da7d7a8849d1a933326f61810fa8de9457c0902f3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing for a malicious redirector link. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=lua+print+to+console', which likely serves as a gateway to further malicious content. The presence of a large link farm, combined with the redirector, suggests a phishing or malware distribution attempt. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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=lua+print+to+console
    • http://files.moralactionofms.net/uploads/1/3/0/9/130969682/a60d616f891.pdf
    • http://files.apollodrivingschoolhull.co.uk/uploads/1/3/0/7/130775427/pubajidef_vebopakujex_mijasupude.pdf
    • http://files.jamesaaronhogan.com/uploads/1/3/1/6/131637055/1276111.pdf
    • http://files.nivafoundation.com/uploads/1/3/0/8/130873758/259861b2c5.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/2885814426.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/levepoxabinuzogigapatuwob.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/384647061.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/kajixavilesudigusoxugo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1464/4127/files/sularo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/pabazefenemobovozuto.pdf
    • https://cdn.shopify.com/s/files/1/0434/3237/8517/files/nowejubowekewuvus.pdf
    • https://cdn.shopify.com/s/files/1/0436/9488/2984/files/bovepiwapepel.pdf
    • https://cdn.shopify.com/s/files/1/0431/7931/1268/files/55846796203.pdf
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/95373865831.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/kemimema.pdf
    • https://cdn.shopify.com/s/files/1/0430/7851/6885/files/fomadonibulazozegetibe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6976/files/mawetofubimirejugizapiwut.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_off00006aa1.bin
0206296fd2c5556e51df812a32a9407e7cdb3da2987b482b7a69bca14e0eb13b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA1 4868 bytes
font_01_sfnt_off00007b3e.bin
b460d1b9b43fee216480de33e5de67efceb1ba5a4c1f6c6db24238bb5bdde51d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3E 11380 bytes