Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c048ccde057814e…

MALICIOUS

PDF

51.8 KB Created: 2020-08-12 10:26:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0745ef0270904c12849581359e6a944 SHA-1: 30f81626d34087defd1bf5c447838d291600b421 SHA-256: 3c048ccde057814eed3041729677379ee6df43799d40e929f1dee5a0cbd0aa81
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented in the document body as a lure related to 'centrifugal compressor calculations'. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to obscure the true destination. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=centrifugal+compressor+calculations+pdf
    • http://files.chrisbaecker.com/uploads/1/3/1/8/131858540/461f406caf.pdf
    • http://files.dairyflatponyclub.org/uploads/1/3/0/7/130739142/vidibobipal.pdf
    • http://files.ccsflippinvintage.com/uploads/1/3/0/8/130814043/vefelegelukijujazozi.pdf
    • http://datimoli.northforkpoa.org/uploads/1/3/1/3/131379591/zofotalapoli.pdf
    • http://files.schabatavia.org/uploads/1/3/1/3/131398334/vitulo-kogadoger-pirideloge.pdf
    • https://cdn.shopify.com/s/files/1/0436/7591/0294/files/144323245.pdf
    • https://cdn.shopify.com/s/files/1/0432/6473/7433/files/47128478100.pdf
    • https://cdn.shopify.com/s/files/1/0433/8152/2599/files/australian_capital_territory_map.pdf
    • https://cdn.shopify.com/s/files/1/0446/3286/6979/files/olivier_blanchard_macroeconomics_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/tutepifetogujeruzo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faramerujinusopuko.pdf
    • https://cdn.shopify.com/s/files/1/0428/8898/6783/files/zanabukun.pdf
    • https://cdn.shopify.com/s/files/1/0435/3196/0474/files/33862428212.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/herolab_plugin.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/nonibad.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/26812440143.pdf
    • https://cdn.shopify.com/s/files/1/0434/9408/0677/files/97707515788.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/31353812329.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007691.bin
bd5d16da2b44e8db2b0eba0ca0fda6b6ee5a8c2974243fb61a0bc6bc2d132efa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7691 5380 bytes
font_01_sfnt_off000088bc.bin
2782f37c8386b62106e1b6f8a310756f15229579bdadbaf1f3e213f9ef929ccc
pdf-font-stream PDF embedded font (sfnt) at offset 0x88BC 10312 bytes
font_02_sfnt_off0000ac5d.bin
b1345b03cb8ff90cb42c7c8f61cc0a97610ec8082568e26930ee59dd54284444
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC5D 16236 bytes