Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a67f78688356c83…

MALICIOUS

PDF

43.8 KB Created: 2020-07-29 05:23:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85ee3def531e19dd17f1878f8463054f SHA-1: ed77e3f923cdd46c1f907814d9fc8bd628549520 SHA-256: 1a67f78688356c83d44794b41173ac7475c281cfc9e08e572a4514bade041002
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 at least one pointing to known malicious redirector infrastructure (ttraff.com). The heuristic firings indicate a deliberate attempt to create a link farm, likely to obscure the final malicious destination or to engage in SEO poisoning. The document body is heavily obfuscated and unreadable, providing no further context on the lure.

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.com/pify?keyword=nervio+facial+pdf+anatomia
    • http://files.bible-truths.org/uploads/1/3/0/8/130813427/zopokinafazen_radojez_rigegelivur.pdf
    • http://files.cosplayinkfactory.com/uploads/1/3/1/6/131637254/wozemigizof_dujafeg_koxabunalikazir.pdf
    • http://files.benjhomes.com/uploads/1/3/1/6/131606605/de494d1cdea.pdf
    • http://files.bible-truths.org/uploads/1/3/0/8/130813427/zopokinafazen_rado
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/fakomosod.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/75020630886.pdf
    • https://cdn.shopify.com/s/files/1/0435/2802/8312/files/24599468297.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/gojirodaxufuro.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2938/files/mizolomutezegakuvuwu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1089/9624/files/92203432475.pdf
    • https://cdn.shopify.com/s/files/1/0435/0207/6070/files/depojawojoned.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/78747952607.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4470/files/69172642081.pdf
    • https://cdn.shopify.com/s/files/1/0431/8396/4324/files/65208218818.pdf
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/lajewu.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_off00006f0a.bin
fba3ef922a5f0ac76cdf7f03740dbeb11d2f32a74d85519c8b502bbfcf977e62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0A 4940 bytes
font_01_sfnt_off00007fbf.bin
7704e3461c7c1da6661b5b5ba20206d3b249990102aadc8dc9553f551d2827df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBF 10164 bytes

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