Malicious PDF — malware analysis report

Static analysis result for SHA-256 b120033b07f4ad96…

MALICIOUS

PDF

54.4 KB Created: 2020-08-08 21:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46a854927c89f702232f1f77947d661c SHA-1: 3a2b3d038809563741b9f5a0b3303ae0e36df03c SHA-256: b120033b07f4ad96feb6f7bb1cd3f93365919a4e1346d275b52853c482049e23
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure. The document body itself is heavily obfuscated and contains the malicious URL, indicating an attempt to disguise the malicious intent. 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=adjectives+from+a+to+z+pdf
    • http://kakab.wmcyo.org/uploads/1/3/2/3/132303382/rudilunipiju-pemufugaf-lipevakifed.pdf
    • http://terujosif.paddockcleaneruk.co.uk/uploads/1/3/1/6/131607131/bdb064f7dc5.pdf
    • http://files.arkacia.com/uploads/1/3/1/8/131856852/3bb6179b2ce70.pdf
    • http://files.brianskahn.com/uploads/1/3/1/6/131607053/barudir-vukef.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/statistical_quality_control_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0805/6740/files/34783499319.pdf
    • https://cdn.shopify.com/s/files/1/0438/4201/1286/files/zulowovela.pdf
    • https://cdn.shopify.com/s/files/1/0430/1294/8121/files/50128401872.pdf
    • https://cdn.shopify.com/s/files/1/0434/1330/7541/files/anencefalia_genetica.pdf
    • https://cdn.shopify.com/s/files/1/0435/0718/7872/files/5th_grade_math_problems_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/masomusikonuwu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/art_basics_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/34249313718.pdf
    • https://cdn.shopify.com/s/files/1/0434/2385/8845/files/kigagulobudetimuzowis.pdf
    • https://cdn.shopify.com/s/files/1/0430/9182/0695/files/71468084833.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/reboxogiwifenopawaga.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/
    • https://cdn.shopify.com/s

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000089e8.bin
6cd1f97dbbf41c845a23f05d5c40bec2bd1ec52a691b16923a655f9fdb1d6b27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89E8 5444 bytes
font_01_sfnt_off00009c6c.bin
0dd66cd1554c5da60d25a0f6e94bcb4b482024b1a49d86a9eb91f2504525ed05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C6C 15784 bytes

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