Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae659329fd76d2d…

MALICIOUS

PDF

120.6 KB Created: 2020-08-25 15:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9f3156ce1b2e234c05902bf5e4b16ea SHA-1: ad2d3b845197497f44613f0af91348892d9a1a07 SHA-256: dae659329fd76d2d1a7a695304a4eef49787a406b5ceacf48b8bee4f88046f92
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a lure for an advance-fee scam, specifically mentioning lottery/prize language and parcel delivery requirements. It also contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same malicious URL. This indicates the primary goal is to trick the user into visiting the malicious URL, likely to download further malware or engage in phishing.

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.ru/pify?keyword=chronic+myeloid+leukemia+guidelines+uk
    • http://files.hardinsburgbc.org/uploads/1/3/1/1/131164462/08a737d8e9f9219.pdf
    • http://pejefa.achievewe.org/uploads/1/3/2/7/132740930/rogebapinatibo_bodebumirodi.pdf
    • http://files.alicehorn.com/uploads/1/3/1/4/131452942/gebidupewenuno.pdf
    • http://zapukel.swiminfoct.com/uploads/1/3/0/9/130969596/wofazinipasofig-vinixod-xewoxuv-nimodiruzoki.pdf
    • https://cdn.shopify.com/s/files/1/0435/2724/1887/files/adsorption_kinetics.pdf
    • https://cdn.shopify.com/s/files/1/0436/0660/5981/files/faliji.pdf
    • https://cdn.shopify.com/s/files/1/0431/3959/6454/files/32271141368.pdf
    • https://cdn.shopify.com/s/files/1/0436/4120/8992/files/42246124484.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6394/files/nitifurowo.pdf
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/vekuzavul.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/22441882585.pdf
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/swing_trading_candlestick_patterns.pdf
    • https://cdn.shopify.com/s/files/1/0429/6110/9155/files/tekowokesemijuxotokibaman.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/xipakutizenokowatuwumoriw.pdf
    • https://cdn.shopify.com/s/files/1/0437/7726/1729/files/81315291691.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0997/files/68297768577.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_off00019122.bin
453795a22864c13e56b752e637bc282511768cc775dd9149e374f1030712d9d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x19122 5424 bytes
font_01_sfnt_off0001a367.bin
f76d54d67f11520748767c83277dd36a5738fb3b554eee711c05d6f8fca6d710
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A367 16260 bytes