Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcda943a5211bf04…

MALICIOUS

PDF

63.3 KB Created: 2020-09-01 18:28:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6031375de74e6a546a63d725937eb1a6 SHA-1: 271e7733c4aeb44f1a560603e54a8c44b965a6af SHA-256: dcda943a5211bf04a2a819c56b52e84ff15dd0ecd73d4fbb0d0522d28379e9aa
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a high number of embedded links, with a critical heuristic firing for a PDF link farm. One of the primary links points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'romantic love song whatsapp status' and includes the malicious redirector URL, suggesting a lure to a scam or phishing page. The presence of numerous benign-looking Shopify links likely serves to obscure the malicious intent or for SEO purposes.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.club/wix?keyword=romantic+love+song+whatsapp+status
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/domoviwawinulebogigirar.pdf
    • https://cdn.shopify.com/s/files/1/0428/8197/4435/files/betaina_literatura.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/ateroma_articulos.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/6908758317.pdf
    • https://cdn.shopify.com/s/files/1/0436/2970/7422/files/nutuxapamerixinuzewo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51982080438.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/javascript_append_child.pdf
    • https://cdn.shopify.com/s/files/1/0435/0250/2054/files/hash_table_implementation_in_c.pdf
    • https://static.usrfiles.com/ugd/b8c837_60473a937dfa43919d06ae6992d61aef.pdf
    • https://static.usrfiles.com/ugd/451461_21d1b097a90d42b88b763b4050e194f7.pdf
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/89219745663.pdf
    • https://cdn.shopify.com/s/files/1/0437/7129/7943/files/32324353569.pdf
    • https://cdn.shopify.com/s/files/1/0434/6881/6544/files/kelof.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/ravuborateretufonuda.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009615.bin
b4b6a12b3b6d471ea34c9b94e5948c6fdc60bc11c6c0b7404ffc92363873c635
pdf-font-stream PDF embedded font (sfnt) at offset 0x9615 5292 bytes
font_01_sfnt_off0000a804.bin
9cf5cc2ccf138d7878454e1cfed368b0f70886dbc1483453835be9563d72b6ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xA804 10088 bytes
font_02_sfnt_off0000ca8b.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA8B 4324 bytes
font_03_sfnt_off0000d88b.bin
c5dc2a36aa6f8748c92592d86b50a3f6a6e79ddb119a1d45a285ea9806d325b3
pdf-font-stream PDF embedded font (sfnt) at offset 0xD88B 6664 bytes