Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b85c8bb318b38f…

MALICIOUS

PDF

47.7 KB Created: 2020-08-14 01:22:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdf9c00aa04533dd8e47d0b20dfe2368 SHA-1: 2ccc96c60813b985e10e0d5eca8d8dcbdc94e274 SHA-256: 96b85c8bb318b38fb0d9e924fd6bc11ce4b299bc4034e451ca35a577513c917f
128 Risk Score

Malware Insights

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

The PDF contains a link disguised as exam information that redirects to a known malicious URL. The PDF also exhibits characteristics of a link farm, likely intended to improve search engine ranking for malicious content. No scripts were extracted, but the presence of multiple unknown and potentially malicious URLs suggests a phishing or redirection attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=cbse+board+exam+datesheet+class+10+2019
    • http://files.parlourpress.net/uploads/1/3/1/3/131379039/9678.pdf
    • http://guzufa.myimpressivenails.com/uploads/1/3/0/7/130739430/felopiramosete_nilebasijeg_tijofakitagowak_wilorekivemeziv.pdf
    • http://kizaloson.bluebonsaiprinting.com/uploads/1/3/1/4/131437462/waliwireto-nigomowuka-mukogizasomekil-felalo.pdf
    • http://files.fucinarieportfolio.com/uploads/1/3/1/4/131406807/fotani.pdf
    • https://cdn.shopify.com/s/files/1/0428/6955/5356/files/40411567029.pdf
    • https://cdn.shopify.com/s/files/1/0429/2358/9788/files/61488169904.pdf
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/cracking_the_coding_interview_6th_github.pdf
    • https://cdn.shopify.com/s/files/1/0431/8612/7009/files/lofusudaxeniluwowarerumen.pdf
    • https://cdn.shopify.com/s/files/1/0432/7967/9656/files/acetabular_fracture_rehabilitation_exercises_filetype.pdf
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/maxovab.pdf
    • https://cdn.shopify.com/s/files/1/0437/4216/7194/files/93537152160.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdf
    • https://cdn.shopify.com/s/files/1/0432/3917/8399/files/69567503194.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/70922757596.pdf
    • https://cdn.shopify.com/s/files/1/0433/5714/3199/files/24999834444.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_off00006ff6.bin
4c4979d726aba4ea84c6c55b11f740510b9bbd2063ed3e87bac20606207b8eb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF6 5772 bytes
font_01_sfnt_off00008371.bin
73983ccd477f0e4c07634362c0f9f13a23cea415a26bff37f7f125d59a681190
pdf-font-stream PDF embedded font (sfnt) at offset 0x8371 1936 bytes
font_02_sfnt_off00008cb4.bin
6d9bfa592940fa40c097a043f6c3111aa0ba2aa1fa4acad87a264e2a4b26a765
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB4 10780 bytes