Malicious PDF — malware analysis report

Static analysis result for SHA-256 782bfbe32f7f38d9…

MALICIOUS

PDF

33.7 KB Created: 2020-08-24 13:47:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 668381fd55b4cb2bdd9630c4f4ba7109 SHA-1: 058e0b3e622dc69d77890bbf776e06dbad87bd82 SHA-256: 782bfbe32f7f38d942eddde2e641e0a377a22dbf68aaa81c651be691e90522b2
120 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, specifically pointing to 'https://ttraff.com/pify?keyword=mothers+choice+portacot+sheets'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the text 'Mothers choice portacot sheets' and the malicious URL, suggesting a lure to a phishing or malware distribution site.

Heuristics 3

  • 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.
  • 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=mothers+choice+portacot+sheets
    • http://files.chantrydancecompany.org/uploads/1/3/0/7/130776644/begijuwowe.pdf
    • http://vukimoni.bentonorganizing.com/uploads/1/3/0/8/130814328/wedubebasawa_xugododej.pdf
    • http://files.escapekit.com/uploads/1/3/2/3/132303075/gisobikebajuba.pdf
    • http://tisolidux.rushinghomerentals.com/uploads/1/3/1/3/131378779/nadafubijo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8179/2677/files/55996321058.pdf
    • https://cdn.shopify.com/s/files/1/0435/5129/3603/files/78890213085.pdf
    • https://cdn.shopify.com/s/files/1/0430/3139/6503/files/diesel_engine_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/75789129912.pdf
    • https://cdn.shopify.com/s/files/1/0436/1669/8526/files/53764861484.pdf
    • https://cdn.shopify.com/s/files/1/0436/1011/2163/files/1035029860.pdf
    • https://cdn.shopify.com/s/files/1/0447/6423/3882/files/60826655520.pdf
    • https://cdn.shopify.com/s/files/1/0435/4660/7784/files/downy_dryer_sheets_clean_breeze.pdf
    • https://cdn.shopify.com/s/files/1/0434/1497/8718/files/46320235546.pdf
    • https://cdn.shopify.com/s/files/1/0438/4446/8901/files/mepiwujozaponiteguzadov.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/85701135345.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_off0000462f.bin
1f2f90454447fd343ef5b58df20c31055725d089e1514f1f0d63db334d5a728e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x462F 4996 bytes
font_01_sfnt_off0000572f.bin
576019d751810c139acd5ab6b155a706a53e03b34841a525ac4047eca4a10076		 pdf-font-stream PDF embedded font (sfnt) at offset 0x572F 10192 bytes

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