Malicious PDF — malware analysis report

Static analysis result for SHA-256 543f0655293e9dd4…

MALICIOUS

PDF

69.3 KB Created: 2020-07-30 13:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f6ae8948ff282802b7d2dca3601c129 SHA-1: 28c1f3509ab19eae01c8af7073cb3709f3063380 SHA-256: 543f0655293e9dd423d165ee924e0e4f8318675b2009943c7b4779a0b7b791dd
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.cc'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=integrated+solid+waste+management+book+pdf
    • http://files.athomehvac.net/uploads/1/3/1/6/131637658/16d543.pdf
    • http://files.familytimefishingcharters.com/uploads/1/3/1/4/131483371/2570694.pdf
    • http://files.parmaohiomasonry.com/uploads/1/3/1/4/131437699/2ce0cbeae6.pdf
    • http://files.moonpoppyinterpreting.com/uploads/1/3/2/6/132681985/pinuzomuzugake_saneso_dejujotezuxoxeb_bizuxubupegox.pdf
    • http://files.darwinsyantipolo.com/uploads/1/3/0/7/130739987/a02c91f6fc.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/lagusiber.pdf
    • https://cdn.shopify.com/s/files/1/0440/3625/9990/files/benudisaxukogiludesifi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4480/5525/files/47951351079.pdf
    • https://cdn.shopify.com/s/files/1/0441/0019/0360/files/88724669638.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7367/files/5263858397.pdf
    • https://cdn.shopify.com/s/files/1/0438/2749/5074/files/lurirepiluwaxex.pdf
    • https://cdn.shopify.com/s/files/1/0428/8954/3836/files/bameterixapasadezezid.pdf
    • https://cdn.shopify.com/s/files/1/0437/7178/9470/files/kufab.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6573/files/sojabajes.pdf
    • https://cdn.shopify.com/s/files/1/0434/4047/2214/files/3438828700.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/73755458130.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/79190862914.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_off0000d170.bin
0d5ab34fdd840c6db9f240e0fae21e141f7982f628dbca3caaa6fdf11046048f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD170 5384 bytes
font_01_sfnt_off0000e3aa.bin
c65247f335d6c1d61589027b5a29cd38603101a3e7fd66943654c189040ac36d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AA 10504 bytes

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