Malicious PDF — malware analysis report

Static analysis result for SHA-256 acf96a248ab70537…

MALICIOUS

PDF

45.3 KB Created: 2020-08-10 02:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51b3f5f2bebee0226ae63dff9a3f0c99 SHA-1: 2aab9ec14f76ff7676e73d3c43d2c00399e39182 SHA-256: acf96a248ab705375ec9aaf079e30660535b2b43cc819de9a5f8226015d8b11c
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as an application form, directing users to a malicious redirector at 'https://ttraff.cc/pify?keyword=nsfas+application+form+2020+pdf+uj'. This redirector likely leads to further malicious content or exploits. The PDF structure and embedded links strongly suggest a social engineering lure to compromise the user.

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=nsfas+application+form+2020+pdf+uj
    • http://files.courtneywinfieldfitness.com/uploads/1/3/1/3/131380292/8350136.pdf
    • http://files.kajexcnctuning.com/uploads/1/3/2/8/132814505/7488063.pdf
    • http://legola.chrystalgrimleydesigns.com/uploads/1/3/1/4/131407406/wotuvusinu_nigasap_xadogimufezav_bamupetuku.pdf
    • http://xuwemer.stevendupuisoil.com/uploads/1/3/2/7/132740873/4581898.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/19836622924.pdf
    • https://cdn.shopify.com/s/files/1/0455/3559/2613/files/56576220205.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/rapiteluligojewafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1949/files/boseruferef.pdf
    • https://cdn.shopify.com/s/files/1/0438/1730/4226/files/kifedikux.pdf
    • https://cdn.shopify.com/s/files/1/0438/2267/8173/files/vapagisijazapedetuz.pdf
    • https://cdn.shopify.com/s/files/1/0440/4042/1541/files/plex_raspberry_pi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/newobobexumokepafo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3006/8894/files/45276421179.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/77652589434.pdf
    • https://cdn.shopify.com/s/files/1/0428/2158/3014/files/38361261112.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/16567808524.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_off000061b9.bin
052d0be465199e168f500d1f7cedb36e8170f5270c2aae31f887de29e8ca0657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61B9 5384 bytes
font_01_sfnt_off000073e0.bin
6af11c34960ab958d6cf8857f84d7b4f9a77e42cc6f2f6371f60c52c23aa6084		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73E0 11464 bytes
font_02_sfnt_off000099e4.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99E4 4324 bytes

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