Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6f53cf33200accf…

MALICIOUS

PDF

41.6 KB Created: 2020-08-07 00:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 472d59355a307e49cefa2732e7ec152e SHA-1: e09dc17ba4c235e0daa27ead8ec6af2d450a38c0 SHA-256: a6f53cf33200accfd6e8d0a17ac379ea35f39e79211040fbb75856f53cb4f2f9
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious infrastructure, likely as part of a phishing or scam campaign. The document body, though heavily obfuscated, contains the target URL and references to 'bullying escolar en argentina pdf', suggesting a lure. The presence of numerous embedded links, many pointing to Shopify domains, indicates a link farm used to distribute malicious content. No scripts were extracted from this sample.

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=bullying+escolar+en+argentina+pdf
    • http://files.danaeirismcqueen.com/uploads/1/3/0/7/130740118/1042219.pdf
    • http://files.wagster.net/uploads/1/3/2/6/132681342/gejewibiwage.pdf
    • http://files.communityofcongregations.org/uploads/1/3/1/4/131454560/kitunekarufulumu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/pavuniwedinozap.pdf
    • https://cdn.shopify.com/s/files/1/0431/4919/7472/files/smokey_bones_nutrition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/palezofemilom.pdf
    • https://cdn.shopify.com/s/files/1/0435/5827/3185/files/batumomokolu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5395/files/pujajizutogive.pdf
    • https://cdn.shopify.com/s/files/1/0432/8439/8244/files/72400865949.pdf
    • https://cdn.shopify.com/s/files/1/0428/3301/9047/files/55255642312.pdf
    • https://cdn.shopify.com/s/files/1/0437/5789/5841/files/25932975789.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/84584983930.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_off000063f4.bin
c85851afeb8a930dcb4c33944a1369db254556d8e6fa52a51bfbfc7172c0475c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F4 5476 bytes
font_01_sfnt_off000076b8.bin
ca83137cba517753c56ab961a278109a5166d380d583a3710fc16cbf00bc3976		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B8 10284 bytes

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