Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92b56876cc7b4ca…

MALICIOUS

PDF

46.2 KB Created: 2020-07-26 17:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aed39946b4ff86d34cff91913a21f25a SHA-1: 2229a17e1c0c812551f37b950a7726fea1029c99 SHA-256: d92b56876cc7b4ca1f80c884b86ed9cd7e2748a702e044c5fa3705760ef88d0c
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm or SEO poisoning attempt. The primary malicious URL identified is ttraff.cc, which is known to host redirectors. While the document body contains text related to 'Sector imperialis terrain painting guide', this appears to be a lure to disguise the malicious nature of the embedded links.

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.cc/pify?keyword=sector+imperialis+terrain+painting+guide
    • http://files.wendyrhodesphotography.com/uploads/1/3/1/3/131383727/wezetare_rapavivu_pasuwaroxapex.pdf
    • http://files.flourishinpurpose.com/uploads/1/3/0/8/130874101/bapixumi-busurekugeseva-dofixomoxulir.pdf
    • http://files.harmonioushoos.com/uploads/1/3/1/4/131406885/kuwaboxu-kelesazubabixol-vaxewafesaviw-wisuzoludogobe.pdf
    • http://files.cnycommunityacu.com/uploads/1/3/1/4/131453982/5284345.pdf
    • https://cdn.shopify.com/s/files/1/0430/8933/0325/files/29190646378.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1568204463.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dijev.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/xasujatidudaxorum.pdf
    • https://cdn.shopify.com/s/files/1/0433/3145/3081/files/jovopufiziwinatovusonuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/tesikiripubaxurineroful.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/losaxizisimigoki.pdf
    • https://cdn.shopify.com/s/files/1/0439/6033/6542/files/69818020583.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/wanemapuzekuvo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/12492731912.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/4141529669.pdf
    • https://cdn.shopify.com/s/files/1/0429/1097/4108/files/rimuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/1970/6279/files/12698124011.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovabokuvuxinapuwukiberem.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_off000075d7.bin
febdb5d4f364c2fd427aa56598a08012b9578d2f9ef75f5946c898553fdd3274
pdf-font-stream PDF embedded font (sfnt) at offset 0x75D7 5380 bytes
font_01_sfnt_off000087f4.bin
f00c6f649734cdcb26faed2713a202d9bf18514713a4e910d45e49ade03bafde
pdf-font-stream PDF embedded font (sfnt) at offset 0x87F4 10320 bytes