Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b5829a655559b1…

MALICIOUS

PDF

47.4 KB Created: 2020-08-08 11:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b95d330b24210d27bb69279be9240056 SHA-1: 102418d9299e5cfa1db04b50e50515b61cadcb34 SHA-256: 97b5829a655559b1e8aab59b7b25ca548c07c8812621f388e7c675a63771c38d
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=acido+glutamico+funcion+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest a phishing or redirection attempt to 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.cc/pify?keyword=acido+glutamico+funcion+pdf
    • http://wariper.eileenhutson.com/uploads/1/3/0/8/130873851/zironoxoge_punatomalabine.pdf
    • http://files.brtrescue.org/uploads/1/3/0/8/130814169/xizofivub.pdf
    • http://bimegaril.glutenfreesafari.com/uploads/1/3/2/8/132814989/wivib_zirajuwosom_dalafuxuduwad_tisutudupiwe.pdf
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/dowakobufixokaminopokew.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/kolonu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/kibeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/1079/3370/files/xozugiwelakepapaziwilo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/11905865377.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54344474436.pdf
    • https://cdn.shopify.com/s/files/1/0428/4999/2860/files/bobrick_b_262.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/tepirobemapegonena.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5808/files/52904534845.pdf
    • https://cdn.shopify.com/s/files/1/0428/2020/6758/files/dalimogo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/mejafazir.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.

FilenameKindSourceSize
font_00_sfnt_off000068e2.bin
7121cff4d836c79e29b9663d6c9dc034414fe8a30fcce0ede182cc478e5a0ff4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E2 4956 bytes
font_01_sfnt_off000079a2.bin
62082e904a0bd81439bafe38708bbe91caefb3cf6f739cfad5b5400f33c1776d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A2 12088 bytes
font_02_sfnt_off0000a0d5.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0D5 4324 bytes

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