Malicious PDF — malware analysis report

Static analysis result for SHA-256 971caa42fbb74d3a…

MALICIOUS

PDF

40.7 KB Created: 2020-08-15 10:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ec13762d614c6592d988726409d4951 SHA-1: 6bb08813d1b4e3d8069248c0a5611c5f12691242 SHA-256: 971caa42fbb74d3a5cb1bab8d485d8d2a5a496ca89832929a733012b50447739
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/wb?keyword=voluntariado%20corporativo%20pdf'. Another critical heuristic identified a PDF link farm, suggesting an attempt to manipulate search engine results or distribute content broadly. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure. 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.com/wb?keyword=voluntariado%20corporativo%20pdf
    • http://files.rootsoflove.ca/uploads/1/3/0/7/130775108/titorovegit-mewazuvowe.pdf
    • http://files.chantal-pollier.com/uploads/1/3/1/4/131482916/pewulefimope.pdf
    • http://toguroxeg.timelessjourneys.net/uploads/1/3/1/6/131606346/figatamopubat.pdf
    • https://cdn.shopify.com/s/files/1/0433/7909/7758/files/94150977892.pdf
    • https://cdn.shopify.com/s/files/1/0450/3732/2390/files/understanding_automotive_electronics_william_b_ribbens_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/xenerukumil.pdf
    • https://cdn.shopify.com/s/files/1/0429/6382/8895/files/medavekoziruguwag.pdf
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/59562586388.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/21960954335.pdf
    • https://cdn.shopify.com/s/files/1/0430/0711/5423/files/94225446794.pdf
    • https://cdn.shopify.com/s/files/1/0433/8391/4654/files/diabetes_mellitus_type_1_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/jipiva.pdf
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/68944524753.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/56008927853.pdf
    • https://cdn.shopify.com/s/files/1/0440/3511/3110/files/wujaladinafeka.pdf
    • https://cdn.shopify.com/s/files/1/0447/1370/5625/files/short_term_financial_management_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/3584627446.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_off00005ebb.bin
bd5adf49187f90ea09f915553e09be706ef280b09a0083035b777366f0b00be5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBB 4996 bytes
font_01_sfnt_off00006fd4.bin
59769a55e21c34dd3db268fb457f4589d15a95a0ea72aad3f6c7b86b44ad22dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD4 11240 bytes