Malicious PDF — malware analysis report

Static analysis result for SHA-256 e62b40b20bdb5d5c…

MALICIOUS

PDF

41.3 KB Created: 2020-09-19 00:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02672644ff89ef4b772d09a29806124f SHA-1: c7b9454d9bdb3dab0b60d737a6b0037ca32aa434 SHA-256: e62b40b20bdb5d5c39e92f7bec8e80834baa18e0d71a4c1d113c8bce718e609b
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised with SEO-spam keywords. The document body also contains the malicious URL and numerous other links to PDF files hosted on various domains, suggesting a link farm designed to attract traffic. The ML classifier strongly indicated maliciousness, and the PDF structure is consistent with SEO-based redirection tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/wix?keyword=yorba+linda+fit+body+boot+camp+hours
    • http://fivulov.nzwcacc.org/uploads/1/3/1/1/131163729/vitisawage_ligutorepivi.pdf
    • http://files.theperfectpairdolphintrilogy.com/uploads/1/3/0/9/130969498/kuromelokimut-kukiwikuro-kozisubizesujer-zuseguf.pdf
    • http://perapal.depthsofimagination.net/uploads/1/3/1/4/131453050/ruwefubun.pdf
    • http://narusefov.thesituationshortfilm.com/uploads/1/3/0/7/130775692/3898539.pdf
    • http://files.excellenthomedecor.com/uploads/1/3/0/7/130738593/genonovaroju-kijefefofog.pdf
    • http://files.stemstudentinfo.com/uploads/1/3/2/6/132695681/nebiv.pdf
    • http://files.10keventz.com/uploads/1/3/1/8/131858916/gemagof.pdf
    • http://xaremube.creepyoutfitlab.com/uploads/1/3/1/0/131070374/pibaxevinisexojifiz.pdf
    • http://napuket.berwickcostumehire.com/uploads/1/3/1/4/131437886/nabifolu.pdf
    • http://kidagukaj.eamtradio.com/uploads/1/3/1/3/131398008/bovimunodepunowe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/dexenirapulubenigawepalu.pdf
    • https://cdn.shopify.com/s/files/1/0440/0683/4334/files/gwthar_bodo_film.pdf
    • https://cdn.shopify.com/s/files/1/0437/8381/5325/files/disputing_errors_on_credit_reports_letter.pdf
    • https://cdn.shopify.com/s/files/1/0434/1671/5429/files/love_story_piano_music_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/53643628703.pdf
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/hvcc_appraisal_report_delivery_waiver.pdf
    • https://cdn.shopify.com/s/files/1/0438/1684/5469/files/54561188887.pdf
    • https://cdn.shopify.com/s/files/1/0432/0490/3073/files/52759150712.pdf
    • https://cdn.shopify.com/s/files/1/0482/5612/3034/files/chapter_4_tissue_the_living_fabric_page_82_answers.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_off0000615c.bin
2d13cbe745270895bba48b4d3cfb2116ff048e4480c810a3d82a5320141a04c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x615C 5600 bytes
font_01_sfnt_off0000743b.bin
0aa72f0e1018083249693edc19f79cc1cde2262350f558d7d92abb493a4fba24
pdf-font-stream PDF embedded font (sfnt) at offset 0x743B 10488 bytes