Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed1b5c0efb010ca5…

MALICIOUS

PDF

46.0 KB Created: 2020-08-08 22:09:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 619bdbebe33dace3948959f612c3354e SHA-1: f11f77396560ecc583c986e329fd3e958ca95d12 SHA-256: ed1b5c0efb010ca5411fb172394597f3bce81bcedc3401bf09cba31277498b42
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body text, though partially garbled, includes the target URL, suggesting a lure to a site offering a calculus textbook. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating an attempt to drive traffic to potentially harmful content. No scripts were extracted from this sample.

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=calculus+analytic+geometry+larson+pdf
    • http://verorula.pula-fishing.com/uploads/1/3/2/6/132682646/nitazigeb_zaxonavuz_pidiridatarufob.pdf
    • http://files.joseluisperezjim.com/uploads/1/3/1/3/131383553/gejuxab.pdf
    • http://files.dmahc.com/uploads/1/3/0/7/130739633/3847829.pdf
    • https://cdn.shopify.com/s/files/1/0437/8191/4781/files/carnival_sunshine_deck_plans.pdf
    • https://cdn.shopify.com/s/files/1/0433/4570/7162/files/rapixabozeguvekapinorefut.pdf
    • https://cdn.shopify.com/s/files/1/0433/8250/5637/files/monthly_student_attendance_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/2423/5170/files/delijezopasawadixuvo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0577/1927/files/gipujoregidazi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1264/3223/files/acrobat_editor.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0590/files/volume_of_prisms_and_cylinders_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/cash_flow_statement_solved_problems_with_adjustments.pdf
    • https://cdn.shopify.com/s/files/1/0432/5454/6590/files/13398540469.pdf
    • https://cdn.shopify.com/s/files/1/0437/0923/5353/files/xesufexibejunuzupuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/vusanasupomugatelufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5165/5061/files/water_pollution_introduction_project.pdf
    • https://cdn.shopify.com/s/files/1/0433/9076/3175/files/46178685181.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ebf.bin
aa3e21aa6aa32a78d8a79b6f079f2f3b4959896a923a4266363fe27378701828
pdf-font-stream PDF embedded font (sfnt) at offset 0x4EBF 7548 bytes
font_01_sfnt_off000067bc.bin
2a9c99c7ba131c27a2584c1e7fe4c6cf1a905cfcf7f7acd36eca3b8d54d2a740
pdf-font-stream PDF embedded font (sfnt) at offset 0x67BC 5484 bytes
font_02_sfnt_off00007a50.bin
989dbbaaebb6af74f0432beba9881ac53ad39b63a13fcf5274ee5feae2bfc1c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A50 10012 bytes
font_03_sfnt_off00009c4b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C4B 4324 bytes