Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaeb92592ad1a189…

MALICIOUS

PDF

48.5 KB Created: 2020-08-10 09:20:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ba2702dfdde8c48025dbc7ac75dcf68 SHA-1: 227a94ca1031084d452f0a33ca3674c629290dca SHA-256: aaeb92592ad1a1894fd5c1996b7a47404b0db2dd418fe0ed12d4fdc5566ff102
130 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to a syllabus download and includes the same malicious URL. This suggests a phishing attempt where the user is tricked into clicking the link under the guise of downloading educational material, leading them to malicious infrastructure.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=ap+grama+sachivalayam+syllabus+in+telugu+download+pdf
    • http://files.martienvanzuilen.com/uploads/1/3/0/8/130814680/9866589.pdf
    • http://files.drawingonmusic.com/uploads/1/3/1/0/131070044/mupesibudunug-womexezaluzo.pdf
    • http://files.laneinspections.com/uploads/1/3/0/7/130776592/1315519.pdf
    • http://files.babyg-lash.com/uploads/1/3/1/3/131380390/duvobiderosofa-xekupi-rexuramod.pdf
    • https://cdn.shopify.com/s/files/1/0438/3067/3565/files/40404665013.pdf
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/pokemon_red._gbc_rom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9930/8711/files/10115893307.pdf
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/biblia_catolica_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/52163875495.pdf
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/prepa_abierta_ingles_1.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/batetenopurafado.pdf
    • https://cdn.shopify.com/s/files/1/0432/0559/1200/files/48412916968.pdf
    • https://cdn.shopify.com/s/files/1/0429/0894/2499/files/68637051074.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lamafavikunidamekisuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/scientific_calculator_ti_84_online.pdf
    • https://cdn.shopify.com/s/files/1/0435/5283/3695/files/vepefapunizimasudenuxol.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/50512141829.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_off00007e49.bin
be28affce8f4bffe72a0124d089ade97fedeef15cb8f8c87967d8920b5469b9a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E49 5952 bytes
font_01_sfnt_off00009285.bin
2c2362ef49cc4947a0bf9176f801811cc9dd696d43b2ef5c907f6e50ff515220
pdf-font-stream PDF embedded font (sfnt) at offset 0x9285 10016 bytes