Malicious PDF — malware analysis report

Static analysis result for SHA-256 aec740815bdbd603…

MALICIOUS

PDF

49.0 KB Created: 2020-08-03 17:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff82c0e050d054e0baac9acbb0a05fd8 SHA-1: 0de57ceb91da353b67e2924df1285961abfa8b30 SHA-256: aec740815bdbd6034aea52c3c7c1fdf437fa226f441ef59408342c955e94f710
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 malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content through a large number of seemingly benign documents. The primary malicious URL identified is https://ttraff.ru/pify?keyword=aisi+4140+h+pdf.

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=aisi+4140+h+pdf
    • http://files.lynnwinchester.com/uploads/1/3/0/7/130740571/fubidejelolejor.pdf
    • http://files.k-sportsmassage.com/uploads/1/3/2/8/132814989/5729859.pdf
    • http://files.hdtrbch.org/uploads/1/3/1/4/131455463/wirojexi_gafar_bawokofujilamiw.pdf
    • http://files.myonlinehomeopath.com/uploads/1/3/0/7/130776327/5241602.pdf
    • http://files.workingmolossersunited.com/uploads/1/3/0/7/130739603/tuwiwefazuwatiboweb.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/eminem_marshall_mathers_lp_2_zip.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/tbc_blacksmithing_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/1753/4629/files/gamubixonegozonuf.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/nate_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9715790575.pdf
    • https://cdn.shopify.com/s/files/1/0434/1006/3527/files/soxupazovus.pdf
    • https://cdn.shopify.com/s/files/1/0428/7361/8599/files/town_of_salem_wiki_investigator.pdf
    • https://cdn.shopify.com/s/files/1/0432/3590/1602/files/65940042501.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1245/files/weduboselox.pdf
    • https://cdn.shopify.com/s/files/1/0439/5050/6152/files/42617591677.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_off00007390.bin
c1f24d565476e8c4ab0d2f59ab529c490ab1dd39a96cac098afabc1af8e1d770		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7390 5064 bytes
font_01_sfnt_off000084df.bin
008342d527f7ac0da37e186d962adf421a3eeb87556e112df93de9a444fbd2d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84DF 16144 bytes

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