Malicious PDF — malware analysis report

Static analysis result for SHA-256 4810923daf2d4432…

MALICIOUS

PDF

38.8 KB Created: 2020-07-24 10:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9405777227eb68e813057273795abed7 SHA-1: 58a9e9970cde439258d6950eb2be15f503fb9539 SHA-256: 4810923daf2d443229b141b0f70a2b74ef7f576002f91881b094d284f2706204
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it features a PDF link farm, with the primary URL hosted on Shopify. The presence of a 'download button' heuristic and the document body text suggesting a 'convert pdf to word' utility further support a lure-based attack pattern. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=convert%20pdf%20to%20word%20to%20edit%20text
    • http://files.thechristianrepository.com/uploads/1/3/0/7/130775009/569130.pdf
    • http://files.bnaaok.com/uploads/1/3/1/4/131437503/misinefuletuwalojore.pdf
    • http://files.nehemiahshope.org/uploads/1/3/2/6/132695881/vudibitureda.pdf
    • http://files.anassafehavenrescue.org/uploads/1/3/1/8/131856949/cd26ae50f5e1.pdf
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/37463859734.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/43662833784.pdf
    • https://cdn.shopify.com/s/files/1/0435/6522/0003/files/lelukininodonipisi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/72254258851.pdf
    • https://cdn.shopify.com/s/files/1/0430/5161/4359/files/zuzuvumifubuxekifisor.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/xurep.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/ragopasi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/solosabojupox.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/78876131191.pdf
    • https://cdn.shopify.com/s/files/1/0430/4276/7001/files/9322709272.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/jotipasuwuworudu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/budazasinopuxa.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/dagulipu.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_off00005cd5.bin
8ab18410b8a5cdebad530fc28a3dd7a301fe3cb382b6913edce919ad27dd9a21
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD5 4644 bytes
font_01_sfnt_off00006cc8.bin
f9e155f320ca5f1b96deba0d807933cd969da29c88e6f98aff59666e3e9e7657
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC8 9736 bytes