Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae1a6a22565eccc6…

MALICIOUS

PDF

45.2 KB Created: 2020-08-10 03:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7480e2100bde183132ee19590c24df10 SHA-1: 410a5d83745a27bcb08ce7ada81f2bc88c2f58b5 SHA-256: ae1a6a22565eccc6d2f9353e768d3e285860a6653bf566f578527bfbc4b3d547
120 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=ahu+and+fcu+system+pdf'. This indicates the document's primary purpose is to lure the user to a malicious site. The presence of numerous other links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to increase visibility. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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=ahu+and+fcu+system+pdf
    • http://files.meaningfulhealthhurunui.org/uploads/1/3/0/9/130969984/susirexukidug-famevab-jipuru-jujonojufisumu.pdf
    • http://files.protectkahoolaweohana.org/uploads/1/3/2/6/132683330/7c9df00daec91.pdf
    • http://files.workingwordsproductions.com/uploads/1/3/0/7/130740368/dofobeturo.pdf
    • http://files.officialmusicsounds.com/uploads/1/3/0/9/130969206/b6ac2.pdf
    • http://files.jerrycancompany.com/uploads/1/3/1/8/131856877/3352732.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/nuwulipekeki.pdf
    • https://cdn.shopify.com/s/files/1/0429/8476/7641/files/rusuko.pdf
    • https://cdn.shopify.com/s/files/1/0435/3097/7431/files/30649424157.pdf
    • https://cdn.shopify.com/s/files/1/0431/7790/2241/files/57689243055.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2479/files/ashirvad_pvc_pipes_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/58130655156.pdf
    • https://cdn.shopify.com/s/files/1/0433/6956/2266/files/blanking_die.pdf
    • https://cdn.shopify.com/s/files/1/0428/6716/3302/files/83453912950.pdf
    • https://cdn.shopify.com/s/files/1/0455/5584/3237/files/85680029943.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/mathematical_definitions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bafewemuwidizisaj.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_off0000733d.bin
7b0ddd1637aa6eccb927d12d95d14f9787e64d59ee9b189905e32f2b53d2ac81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x733D 5356 bytes
font_01_sfnt_off00008564.bin
fff5bce43d1423d5cb65323bb7ca912eda27b9de2b3deca8f61feb43a302ff01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8564 10072 bytes

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