Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cdeb5c628c4cf0f…

MALICIOUS

PDF

41.1 KB Created: 2020-08-12 07:24:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93b1faedb4b9fc9d24e9d679e0e6447f SHA-1: e0d658169b7340a0fd30d1468df5267b2e24851d SHA-256: 8cdeb5c628c4cf0fc445d84977370382cd7e0af529eeb6bcacd496dba38d3153
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a direct link to a known malicious redirector at 'https://ttraff.ru/wb?keyword=2017%20porsche%20macan%20repair%20manual', which is also present in the document body. This suggests the document's primary purpose is to lure users to malicious infrastructure by masquerading as a useful document.

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/wb?keyword=2017%20porsche%20macan%20repair%20manual
    • http://files.agsorette.com/uploads/1/3/1/4/131406403/duwikeji-bojewibozodoj-gerupe-tanig.pdf
    • http://files.folsomstrings.com/uploads/1/3/0/7/130776819/0f6dd.pdf
    • http://files.suzettemacgregor.com/uploads/1/3/1/3/131380052/6441908.pdf
    • http://loxel.emptyvessels.org/uploads/1/3/1/4/131437987/dd2f8134867.pdf
    • http://files.nisquallymeadows.org/uploads/1/3/1/0/131071041/223e7ac.pdf
    • https://cdn.shopify.com/s/files/1/0433/4691/9579/files/bonosu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3874/3450/files/bevurinapufamulote.pdf
    • https://cdn.shopify.com/s/files/1/0439/0735/0696/files/84733036060.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/97789682748.pdf
    • https://cdn.shopify.com/s/files/1/0439/6895/4526/files/maxxon_lift_gates.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdf
    • https://cdn.shopify.com/s/files/1/0430/0845/8905/files/15507929927.pdf
    • https://cdn.shopify.com/s/files/1/0439/7416/4638/files/cephalopod_fossil.pdf
    • https://cdn.shopify.com/s/files/1/0433/4321/6789/files/noughts_and_crosses_prologue.pdf
    • https://cdn.shopify.com/s/files/1/0433/6785/8334/files/ihk_berichtsheft_vorlage_wchentlich.pdf
    • https://cdn.shopify.com/s/files/1/0432/7630/4544/files/jidekanelebebadafubozize.pdf
    • https://cdn.shopify.com/s/files/1/0434/2385/8850/files/10349835185.pdf
    • https://cdn.shopify.com/s/files/1/0428/9232/9119/files/64449689855.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_off000062ae.bin
0a4febb5f56a4993705eb61c035ab52bdf166dc5817b76428faffabdc00de0b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x62AE 5484 bytes
font_01_sfnt_off00007521.bin
6d4173745c797e85d420da9ac81135014ca3c5b7e8f0626363da1d06abc7cf5a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7521 10040 bytes