Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde8777c1c0e4eab…

MALICIOUS

PDF

46.1 KB Created: 2020-08-06 04:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a88e86d2efa391b1cb58adce21681498 SHA-1: 81396f0619489950afc36748e89345e0759728fb SHA-256: fde8777c1c0e4eabb9386d017f056afe9acee8867a1648e9c06083062b8dc337
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is part of a link farm designed to appear as a free download for a 'Bengali recipe book pdf'. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack vector is likely social engineering via a deceptive link.

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.com/pify?keyword=bengali+recipe+book+pdf+free+download
    • http://files.bellacalore.com/uploads/1/3/0/8/130814279/mumubimogamu-fupedevumebat-ropetiwajo.pdf
    • http://files.abctrainings.org/uploads/1/3/0/9/130969811/542444.pdf
    • http://files.spashphysics.com/uploads/1/3/0/9/130968958/a4ed84b461096.pdf
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/80644729945.pdf
    • https://cdn.shopify.com/s/files/1/0438/1910/6466/files/lorigafagibomisi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdf
    • https://cdn.shopify.com/s/files/1/0431/3897/3857/files/bebidas_espirituosas.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/teninegonirexezibo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/41092971071.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/47576513596.pdf
    • https://cdn.shopify.com/s/files/1/0434/3978/4103/files/6154790425.pdf
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/88773241089.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bafewemuwidizisaj.pdf
    • https://cdn.shopify.com/s/files/1/0448/0948/6498/files/canzoniere_scout_con_accordi_reparto.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5293/files/88969779520.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_off000057c8.bin
64694dad68dd94f5e5e632263e49b7b87c10bf91b7b70c746eae5d3541974689
pdf-font-stream PDF embedded font (sfnt) at offset 0x57C8 5488 bytes
font_01_sfnt_off00006a93.bin
0c3a8d16ecc8b5ddd06eb4cc5d740722f6ddc27fb5e543d23c9302b6fba9291d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A93 5644 bytes
font_02_sfnt_off00007cf1.bin
eb56af8ff3b11394443b74828fe7a33f7d48393ee1ff2de8407d7453ad64932d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF1 15092 bytes