Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a29d3212cc2763a…

MALICIOUS

PDF

44.8 KB Created: 2020-08-08 14:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 758dccebcd9484ba12e98c10f91d8768 SHA-1: f9985ecb0dc5e4bd16284bee77d2644e714cb5ef SHA-256: 9a29d3212cc2763aeddb23b39d681fb126604079809218896d25e5f6c9a88890
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a malicious redirector link to ttraff.com, which is likely the initial lure. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector. The presence of numerous links suggests an attempt to manipulate search engine results or distribute malicious content through a link farm.

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=mobile+app+programming+language+pdf
    • http://files.mobilecontessa.com/uploads/1/3/1/0/131070152/8125874.pdf
    • http://burug.nienesmoodlab.nu/uploads/1/3/0/7/130776485/vurogewisowetew.pdf
    • http://files.sueconsidinephotographics.com/uploads/1/3/2/6/132695472/kogigikiputaw_duzeximotuditu_muvekiba_bamakisiz.pdf
    • http://files.demandinggenealogist.com/uploads/1/3/0/7/130776023/9204979.pdf
    • http://files.dcaravanviral.com/uploads/1/3/0/8/130874593/6221516.pdf
    • https://cdn.shopify.com/s/files/1/0433/9603/8812/files/36408521933.pdf
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/pitorepobalakiruko.pdf
    • https://cdn.shopify.com/s/files/1/0436/9684/9051/files/canvas_business_model_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2099/files/31501873145.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/fasor.pdf
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/99564069599.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/rosudotetoruzitivadu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2785/5517/files/79254091090.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0722/9597/files/36131077849.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/project_acknowledgement_format.pdf
    • https://cdn.shopify.com/s/files/1/0437/8158/7093/files/4418258256.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/gexunegolagekebeguzi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9992/1315/files/33118510556.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_off000070c4.bin
98c477fd5890facb8e36f993609ca94a1418071cd134185097505905d521b9e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x70C4 5328 bytes
font_01_sfnt_off000082db.bin
25d0e14eab7c40ffb7a63a8b635afc901c3eb969382233804ae593a13afe391f
pdf-font-stream PDF embedded font (sfnt) at offset 0x82DB 10312 bytes