Malicious PDF — malware analysis report

Static analysis result for SHA-256 b43b457e7806ede0…

MALICIOUS

PDF

49.7 KB Created: 2020-08-26 00:09:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7755ab4eb84ca0815f568efd911cc4f8 SHA-1: 30c81f46944a03e36d049cbef5f6d7ac24f98ffa SHA-256: b43b457e7806ede00dbafebe657e8434dd440f953f43d1c5e25a6ef3d86e7a90
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL is https://ttraff.link/pify?keyword=resumen+de+la+ratonera+rincon+del+vago, which likely serves as a lure for phishing or malware delivery. The document body itself is heavily obfuscated but contains references to the malicious URL and benign-looking PDF filenames hosted on Shopify, suggesting a deceptive tactic.

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.link/pify?keyword=resumen+de+la+ratonera+rincon+del+vago
    • http://ripupodo.joellemeristal.com/uploads/1/3/1/1/131163635/zorivor.pdf
    • http://ritaxuxat.bobwatkinsrealty.com/uploads/1/3/0/8/130814328/bobuju.pdf
    • http://files.cslconsultingllc.com/uploads/1/3/1/0/131070196/ziraxoverewu_bejebokerofuta_gesovidusokusab_xejosipu.pdf
    • http://files.iscebs-richmond.org/uploads/1/3/1/4/131453250/kutejilepuju_zubalimuxugexaf.pdf
    • http://files.mdfsuccess.com/uploads/1/3/1/4/131409526/visunobomokonano.pdf
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/tutevujamibijimujutuvipu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/lima_barreto_biografia.pdf
    • https://cdn.shopify.com/s/files/1/0438/3657/1808/files/usgs_7._5_minute_topo_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/6368/0932/files/74871302748.pdf
    • https://cdn.shopify.com/s/files/1/0434/7671/3637/files/wajufejuxotovuzela.pdf
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/jurovarubebubuwivefuta.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2346/files/tubabamadewiteve.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0887/files/71817431974.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdf
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/fopigiwamotosi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/master_promissory_note.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_off0000733e.bin
2440ddf873f1425da92616c1a8be9f30a45ae71ece26127fa0b734de2346b3a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x733E 5208 bytes
font_01_sfnt_off000084df.bin
3218d3fc67708f732b703d51acd182c9373b2e3259be05bd475349ebc86d46ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x84DF 11248 bytes
font_02_sfnt_off0000a9bb.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9BB 4324 bytes