Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2698de59e9922b3…

MALICIOUS

PDF

49.4 KB Created: 2020-08-14 03:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87010b49ce1500668e8dca1f47bbe288 SHA-1: ac2bd2f737deae7a6093c07c5ba504ab3d4b4157 SHA-256: a2698de59e9922b3018c622df0a8731ab85394152aa03b440d1968659d16ab20
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious URL is reconstructed from the document content.

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=drama+script+template+pdf
    • http://wedamog.audiotechmalta.com/uploads/1/3/1/8/131857247/1540295.pdf
    • http://files.nnhst2.org/uploads/1/3/1/3/131380558/koxam_dutupiladal_zowozo_romiloxori.pdf
    • http://files.siliconvalleystalent.com/uploads/1/3/2/8/132815882/2090394.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/23321933849.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/odisha_b._ed_question_paper_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/letters_sounds.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4738/files/zopebabixipidoresikeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/gufulozafupifujeser.pdf
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/99346857386.pdf
    • https://cdn.shopify.com/s/files/1/0450/1274/6390/files/wadokosokasob.pdf
    • https://cdn.shopify.com/s/files/1/0438/5197/2768/files/bedingte_formatierung_excel_farbe.pdf
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/soxewovima.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/protocols_for_in_vitro_propagation_of_ornamental_plants.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/zomufubikoguzabeziw.pdf
    • https://cdn.shopify.com/s/files/1/0437/3096/0549/files/44670272688.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_off0000835e.bin
fe25a2777be5366689d13078014c692e2e290d93a760bee44512ded491d161ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x835E 5300 bytes
font_01_sfnt_off00009541.bin
38548161fa134130e0e9cca65fd8dd395c56ca4c168ea3ffbe94584ed4fcbc77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9541 10364 bytes

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