Malicious PDF — malware analysis report

Static analysis result for SHA-256 23de237587bdaa6c…

MALICIOUS

PDF

48.3 KB Created: 2020-08-20 13:23:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c6d6dc2bb99b1c5a747fb2e5b164583 SHA-1: 0b0debe5c4f3cd7c4e04cd247b2ec185b6e34d23 SHA-256: 23de237587bdaa6cecc363119045463ef0dc1b060a1f28e7420bb30328aa7c3d
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Apple tv app samsung smart tv' and the malicious URL, suggesting a lure to a phishing or scam page. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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.ru/pify?keyword=apple+tv+app+samsung+smart+tv
    • http://files.smoaksignal.com/uploads/1/3/0/7/130775639/9878497.pdf
    • https://cdn.shopify.com/s/files/1/0435/5738/8440/files/kolibusogar.pdf
    • https://cdn.shopify.com/s/files/1/0432/1479/9012/files/tifalizetes.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/financial_accounting_and_reporting_1_assignment.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/4392851553.pdf
    • https://cdn.shopify.com/s/files/1/0429/8617/6675/files/kifebuji.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/ayyappa_bokaro_admission_form_for_class_11.pdf
    • https://cdn.shopify.com/s/files/1/0429/0206/1215/files/curso_de_adestramento_canino.pdf
    • https://cdn.shopify.com/s/files/1/0432/4117/7256/files/xamugutofegetuge.pdf
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/94711161573.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/rupiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/mufadawojagafov.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0422/files/rivewa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gefoviliruvowej.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_off00006b77.bin
e7d123e0bc040fb943bc3fee3747ecca3354dff76c855f47c0556b9ec2dafe0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B77 5188 bytes
font_01_sfnt_off00007d09.bin
738cae585fee58f6832f511c6fb8823a8d1a52c6ee8b417f7ea3bc256fcf4dfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D09 9888 bytes
font_02_sfnt_off00009f10.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F10 16164 bytes

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