Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a4e19f1e97873d5…

MALICIOUS

PDF

49.8 KB Created: 2020-08-18 20:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54415562e636f07b87e2ff31683fa486 SHA-1: a3b7a81273b323f66c12194cae8fa0a9a2f1287c SHA-256: 1a4e19f1e97873d52750e2c8066e0137416a6d8cd807c8814fa77624132e28c4
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to external resources, including a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for academic content. The primary heuristic indicates the PDF is a malicious redirector, attempting to send users to harmful sites. The presence of multiple Shopify-hosted PDF links suggests a link farm or SEO poisoning tactic to disguise malicious intent.

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.cc/pify?keyword=common+features+of+bantu+languages+pdf
    • http://motavegi.azshareit.com/uploads/1/3/0/8/130874247/2962485.pdf
    • http://files.detroitchamberorchestra.org/uploads/1/3/2/6/132683137/lulabalug-mibowos-wolitidixavowe.pdf
    • http://vuzapif.brightdoxies.com/uploads/1/3/1/4/131453453/3c387a.pdf
    • https://cdn.shopify.com/s/files/1/0432/7273/2825/files/zepipokawu.pdf
    • https://cdn.shopify.com/s/files/1/0444/3809/3990/files/brown_s_nautical_almanac_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6960/files/26784311869.pdf
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/xuvure.pdf
    • https://cdn.shopify.com/s/files/1/0432/3255/9263/files/rexawixofiduviwi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0528/files/54483696484.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/servsafe_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/5921/4496/files/ikea_pax_wardrobe_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0434/4807/4396/files/alien_swarm_pc_game.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/golalebilafofuzugetuvi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ddb.bin
dd5698ac42b9b7beb40accd83468ee61ae5b4e67a3721cf74e190c0a32d34f7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDB 5404 bytes
font_01_sfnt_off00008018.bin
54271996de40b3e4d1b484e61566559d43ec5f04295fa6580552251f4eafaddf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8018 10824 bytes
font_02_sfnt_off0000a546.bin
0ac7c3374b05c7f503ea1e1306be6d1b38d4f84cef18590183456b3168b0763b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA546 16144 bytes

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