Malicious PDF — malware analysis report

Static analysis result for SHA-256 c318924af27b1286…

MALICIOUS

PDF

43.0 KB Created: 2020-08-26 04:05:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d86aeb46e121014b894b4d6f981d2ec SHA-1: cb2a63adadc473c3c148c821b801bf8ac7884cf8 SHA-256: c318924af27b1286254103246faf437bac40627073d0e0e2ad7a130c17cd275c
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body contains text that appears to be a lure for a book download, and the primary malicious URL is 'https://ttraff.cc/pify?keyword=the+startup+of+you+download'. This suggests a phishing or scam attempt to redirect users to malicious content.

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=the+startup+of+you+download
    • http://files.amwasjb.com/uploads/1/3/1/4/131483254/goxuk.pdf
    • http://files.rockhollowwoods.org/uploads/1/3/1/3/131398094/jofosi.pdf
    • http://kavokeb.406berners.com/uploads/1/3/1/3/131383483/jutimikadapaviruk.pdf
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/56579210938.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/spanish_dictionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/75421924779.pdf
    • https://cdn.shopify.com/s/files/1/0429/3492/7513/files/33755353547.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8392/files/fatasixozenu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mirogorozizodixomalejog.pdf
    • https://cdn.shopify.com/s/files/1/0434/7107/7526/files/81926368913.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/java_comparable_interface.pdf
    • https://cdn.shopify.com/s/files/1/0434/5482/4598/files/list_of_syn_and_anti_addition_reactions.pdf
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/mokukat.pdf
    • https://cdn.shopify.com/s/files/1/0429/2299/9964/files/fazatep.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_off00006a1c.bin
cee14ce797d2c0f9f171bf11133e8ed996cdf3c144c692fb5146e0ca0d702a7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1C 5272 bytes
font_01_sfnt_off00007c1a.bin
d641aa9573851ecca020466feb97aa2e171a58e29242e562ca76cf0ae92995c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1A 10416 bytes