Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce3d4c151a4e6161…

MALICIOUS

PDF

35.6 KB Created: 2020-08-15 01:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f120e64f9fc8d1905f3bfd7a81cbb73 SHA-1: 468727747537005dfd6c454148409612c37f14bb SHA-256: ce3d4c151a4e616111a15282ac7ccbc4af00f43833052d208b7a1c4a000a7683
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=grade+1+science+worksheets+materials', is presented as educational material to entice users to click. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine further payload delivery mechanisms.

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=grade+1+science+worksheets+materials
    • http://files.orangecaddy.com/uploads/1/3/0/8/130874026/golifukolek-rowerukini.pdf
    • http://files.drtaotcm.com/uploads/1/3/0/9/130969057/gajegawumiwiwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6333/files/clean_intermittent_catheterization_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0432/3282/1412/files/42187245251.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/vinalikonabakogin.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1827/files/88667470587.pdf
    • https://cdn.shopify.com/s/files/1/0437/6484/2647/files/xujezutaxapitesigififen.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1178/files/54823063708.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/lipedazis.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/doubleclick_campaign_manager_reporting.pdf
    • https://cdn.shopify.com/s/files/1/0429/3004/5091/files/53391939061.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/38322146995.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/jawetarodatubeliv.pdf
    • https://cdn.shopify.com/s/files/1/0434/4106/2040/files/chaotic_sword_god.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_off000041eb.bin
f5919adb9d6e3df6985d255ea3740aa1af66905e9690c487e560396ce0c3f2b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41EB 5204 bytes
font_01_sfnt_off00005385.bin
7f28b05d77dd6166fbc3f462bd0b6886adab6edffe18b0d505c403dcf2dfe40e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5385 9364 bytes
font_02_sfnt_off0000738e.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x738E 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.