Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c7bc5ea41c9c5d…

MALICIOUS

PDF

50.6 KB Created: 2020-08-12 15:34:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7547a663f562594df216a42f0216e80d SHA-1: a94e03c016671b25eb232d84ccdda16096a9ad48 SHA-256: c3c7bc5ea41c9c5d5ca7e52b3698ea79765b440ac25b186b406ab6bf6ad12171
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a large number of external links, a technique often used for SEO manipulation or to distribute malicious content. One of the primary links directs to a known malicious redirector infrastructure. While no scripts were extracted, the sheer volume of links and the presence of a malicious redirector suggest an attempt to lure users to harmful sites.

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=bacterial+pathogenesis+wilson+pdf
    • http://files.srrlsf.com/uploads/1/3/1/3/131380868/4f04903295aa5.pdf
    • http://files.melissaholden.com/uploads/1/3/1/8/131856904/fegonegan.pdf
    • http://files.epsaofficial.eu/uploads/1/3/0/7/130738548/850429.pdf
    • http://dajavemu.makersnextgen.com/uploads/1/3/2/7/132710621/kebefenet-zorokudabiri.pdf
    • https://cdn.shopify.com/s/files/1/0436/2915/0368/files/wujibibamogelugelezadix.pdf
    • https://cdn.shopify.com/s/files/1/0428/2010/8455/files/96972093377.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9074/files/31008555602.pdf
    • https://cdn.shopify.com/s/files/1/0435/5322/6913/files/bidal.pdf
    • https://cdn.shopify.com/s/files/1/0439/1324/8923/files/damofumew.pdf
    • https://cdn.shopify.com/s/files/1/0431/3956/3686/files/munipizovazof.pdf
    • https://cdn.shopify.com/s/files/1/0447/0882/3193/files/bise_lahore_9th_gazette_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/1324/2014/files/income_tax_amendments_for_fy_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78030006053.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3738/files/gepopurotepi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/zurudumakamumipemo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3735/1323/files/vitupowabaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/5091/7269/files/cuaderno_para_colorear_mandalas.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_off000086f1.bin
2edd45f9ed89d5f1a7b9db05fb55e4d40c7a62d1dd432f10f733b853f2da04d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86F1 5556 bytes
font_01_sfnt_off000099db.bin
a5d2f31002f8494500eec61f823ae46e80d5abb4ab373ef262f4bad4db50bf35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99DB 10544 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.