Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8cebf8c05e35d7…

MALICIOUS

PDF

40.1 KB Created: 2020-08-19 20:38:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33151428c9accbb91f1d2931698dceeb SHA-1: 9fbf5fb157aea96ac0012d670f4970389522b2fe SHA-256: 8b8cebf8c05e35d79d96fc843faa87a2cc6bac565126f2d828f750a474b628bd
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on Shopify, forming a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body contains text related to 'arsenic in bottled water consumer reports', suggesting a lure for a health-related scam. 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=arsenic+in+bottled+water+consumer+reports
    • http://files.zhuoshengjin.com/uploads/1/3/0/7/130776487/witufag.pdf
    • http://files.linkyscloset.com/uploads/1/3/1/4/131452824/3392188.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6212/files/9836620362.pdf
    • https://cdn.shopify.com/s/files/1/0435/0722/0635/files/sovugoko.pdf
    • https://cdn.shopify.com/s/files/1/0428/5621/8780/files/tipos_de_disacaridos.pdf
    • https://cdn.shopify.com/s/files/1/0455/6403/5237/files/foguxa.pdf
    • https://cdn.shopify.com/s/files/1/0448/9219/2923/files/wufetasanep.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/xuwumulebiwifivowule.pdf
    • https://cdn.shopify.com/s/files/1/0430/9244/3303/files/penozupizodomojujolisufaz.pdf
    • https://cdn.shopify.com/s/files/1/0440/2026/9221/files/agriculture_class_10_extra_questions.pdf
    • https://cdn.shopify.com/s/files/1/0428/0067/7031/files/lapumelujujujetupe.pdf
    • https://cdn.shopify.com/s/files/1/0441/0825/1288/files/2437035691.pdf
    • https://cdn.shopify.com/s/files/1/0434/8660/9573/files/45410400831.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_off00005f41.bin
12ada0cc36cc1bc9413f168652d21a34fb5f502709d7b8dc87d9496b3e4af940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F41 5440 bytes
font_01_sfnt_off000071aa.bin
ad840b87848f5cf3a1259cb370f5b5bc02dc7d786afa5f63fadb62dd059f2b81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AA 9876 bytes

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