Malicious PDF — malware analysis report

Static analysis result for SHA-256 b52f4f94380df82b…

MALICIOUS

PDF

99.2 KB Created: 2020-07-27 15:27:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 528b83622ed2aee5bd5e9e093d7d8d8f SHA-1: 8927c503ce80c4c597467736856e77177712cded SHA-256: b52f4f94380df82bbc27bf23e09832efdb446e9363f08d1eff797c64049887de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for an advance-fee scam lure, indicating it attempts to trick users with promises of prizes or funds. It also contains a critical heuristic for a malicious redirector link pointing to 'ttraff.com', which is likely used to deliver a second-stage payload. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=2008+chevrolet+tahoe+ltz+manual
    • http://files.rockyemidiopaterra.com/uploads/1/3/1/8/131856498/jupovu.pdf
    • http://files.hilarymurphyphotography.com/uploads/1/3/2/6/132695336/zokijader_voxale_beginop_numobibap.pdf
    • http://files.kcbevco.com/uploads/1/3/2/6/132680901/tukuwukos.pdf
    • http://files.onlineloan-payday.org/uploads/1/3/1/6/131606343/bawerefuxisemi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/22292896758.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/dunonasebujomefisen.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/wadabugagovulunoduxer.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/93859587355.pdf
    • https://cdn.shopify.com/s/files/1/0440/0827/6126/files/12828989494.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/91984378053.pdf
    • https://cdn.shopify.com/s/files/1/0432/3383/7224/files/bifijil.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7415/files/56135425546.pdf
    • https://cdn.shopify.com/s/files/1/0430/9860/3669/files/92982044467.pdf
    • https://cdn.shopify.com/s/files/1/0437/8266/8437/files/kopofigolenaleteruve.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/87740143671.pdf
    • https://cdn.shopify.com/s/files/1/0441/0572/8152/files/vudonevimevikifuda.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_off00013418.bin
bbbecc7e1948ba27c243f5e70728c76bfc2acb38589abaa83dd68b398238d129
pdf-font-stream PDF embedded font (sfnt) at offset 0x13418 5180 bytes
font_01_sfnt_off0001458d.bin
7e0973cd4d97f6b7d76a7d6864d13fa30ecf8b4ea220e0160d9d16210b84e8ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x1458D 10628 bytes
font_02_sfnt_off00016a37.bin
c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c
pdf-font-stream PDF embedded font (sfnt) at offset 0x16A37 16060 bytes