Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1a56703b53c8624…

MALICIOUS

PDF

40.7 KB Created: 2020-08-14 02:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a13bfac77cadd48ecd6069bc693f1781 SHA-1: beff52e4f44f5db3dabd46e0aa4eec919f979443 SHA-256: c1a56703b53c8624cc14b01d085b9e37bd3f0be0d3b6fcff25cf1bb2692bc64b
150 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, pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains text related to physics problems and the URL that triggered the malicious redirector heuristic. The primary attack vector appears to be social engineering, luring users to a malicious site under the guise of educational content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=uniformly+accelerated+motion+problems+with+solution+pdf
    • http://ruvavedi.polishedsculpture.com/uploads/1/3/1/3/131380160/vewiki.pdf
    • http://jilul.artwithsas.com/uploads/1/3/0/7/130776031/4d2a3b858f.pdf
    • http://pazatenuz.vdm46.com/uploads/1/3/1/8/131857114/1571800.pdf
    • http://ponululet.amuse.si/uploads/1/3/1/4/131437601/6749582.pdf
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/44208242791.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/kizozab.pdf
    • https://cdn.shopify.com/s/files/1/0434/0809/7436/files/4661831364.pdf
    • https://cdn.shopify.com/s/files/1/0433/3282/9342/files/digupe.pdf
    • https://cdn.shopify.com/s/files/1/0454/8090/2806/files/telepowufo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/tamulimosesoziledowaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/die_buddenbrooks_buch.pdf
    • https://cdn.shopify.com/s/files/1/0429/9898/8949/files/pedro_pescador_de_homens_hernandes_dias_lopes.pdf
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/31083034041.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/wodaresufowewiremut.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_off00005d02.bin
93772ca6a1a3a46eff6b35af8826cd780d5d7c06fe33acc324b16c81b8ce182f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D02 5720 bytes
font_01_sfnt_off00007050.bin
c89d2a75c1e48c3d8dad0160ccc4d4d0487c0b427d8393491038f52c0e72f782		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7050 10392 bytes

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