Malicious PDF — malware analysis report

Static analysis result for SHA-256 f907809c161e7843…

MALICIOUS

PDF

49.8 KB Created: 2020-08-28 13:33:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57fce55c1f921669cbc06881afcd9d0d SHA-1: e890daeb3cf405af2e4bde7de2028ce3bbbe33bb SHA-256: f907809c161e7843c220a2f12ef9b6f6f881b320ef6cea5a86d238763311fec0
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF files hosted on benign domains, suggesting a link farm or redirection strategy. The primary intent appears to be luring the user to malicious infrastructure via these links.

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.me/pify?keyword=logstash+elasticsearch+mapping+template
    • http://nelolux.peerpatient.com.au/uploads/1/3/1/6/131637024/af03c.pdf
    • http://sovimib.rdhapconnect.com/uploads/1/3/0/8/130873863/jawenexajawogax.pdf
    • http://retiza.pemtel.com/uploads/1/3/1/4/131438873/5da7bab78.pdf
    • http://files.vcdiamond.com/uploads/1/3/1/8/131859993/34196.pdf
    • http://jinozij.safenc.net/uploads/1/3/1/6/131636612/9242961.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/fazopod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97285982277.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/bexuxudopagogujo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9612/8153/files/15814471308.pdf
    • https://cdn.shopify.com/s/files/1/0437/8384/8093/files/2011_nec_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/3287/0037/files/request_copyright_permission_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0464/5499/7160/files/48444029441.pdf
    • https://cdn.shopify.com/s/files/1/0434/6042/7928/files/suluxafosunomedoti.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1325/files/food_and_beverage_basic_knowledge.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7091/files/allan_kardec_evangelho_segundo_o_espiritismo.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_off000078cf.bin
fa93c6228d3e27f669c7fea265308f7157b21be4eae1be6691d1b7cbd549f3ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78CF 5288 bytes
font_01_sfnt_off00008aae.bin
312af3db980bb70100d1e048dbfa20ff17351ec6d606f3859950067313d6a3f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAE 15264 bytes

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