Malicious PDF — malware analysis report

Static analysis result for SHA-256 323192c644f7f4d7…

MALICIOUS

PDF

45.5 KB Created: 2020-07-19 05:48:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ab840e30045379da4a0aff6510d35b8 SHA-1: d1cf2758072992440a2ae95022d34a6716127a05 SHA-256: 323192c644f7f4d77e29931e053c1e6cf1582d7078191afea7f26a6c9f30b21d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One such link points to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'easy piano sheet music'. The presence of a link farm indicates an attempt to obscure the true malicious destination, likely a phishing or malware distribution site.

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/wb?keyword=easy%20piano%20sheet%20music%20classical%20pdf
    • http://files.ministerdebweddings.com/uploads/1/3/1/3/131379060/nurubotezu-zugebasupisobe-fobivizujan.pdf
    • http://files.allisonwiserpianist.com/uploads/1/3/1/3/131382700/5322645.pdf
    • http://files.cosmicaes.com/uploads/1/3/0/7/130776755/8fad464f7.pdf
    • http://files.humanityreboxed.com/uploads/1/3/0/9/130969592/70efc217.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tesip.pdf
    • https://cdn.shopify.com/s/files/1/0433/0533/6985/files/dazifikuxixokidewedugaguv.pdf
    • https://cdn.shopify.com/s/files/1/0436/0326/3645/files/30976898727.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3082/files/potegexapitaliz.pdf
    • https://pigarudumo.files.wordpress.com/2020/06/bevoxafogamebenir.pdf
    • https://sasixoxifira.files.wordpress.com/2020/07/nukulasekedenagigam.pdf
    • https://sujaxogudat.files.wordpress.com/2020/07/7105188516.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/watupuvawazijujibuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/womosoravitixugefiwil.pdf
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/44477630630.pdf
    • https://cdn.shopify.com/s/files/1/0432/8855/9780/files/45820398387.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/33896719609.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/zapadevotepojaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45598155969.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/67880317735.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/3095944893.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/
    • https://cdn.shopify.com/s/files/1/0436

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073a2.bin
968cacecae7cd0475ff8f604f3d6ee6e1bfe938187c5649e8db13e1b42fe33c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x73A2 5240 bytes
font_01_sfnt_off00008554.bin
37b9c9b11de07522cbab00fd238c241f1b9e787b2db9e75a617a90bd0871854c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8554 10260 bytes