Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc33979876f5054…

MALICIOUS

PDF

42.9 KB Created: 2020-08-01 14:53:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef80a935b7ba591991012a7e282ae324 SHA-1: 364653f7e0aa136fed0ccc81ef6506fb51629d54 SHA-256: 4cc33979876f505426ab992e7a6750699818922bcdaf02e3633149bc5ab74251
152 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many pointing to other PDF files hosted on Shopify. One of the primary links, 'https://ttraff.com/pify?keyword=dark+souls+2+soul+memory', is flagged as a malicious redirector. The presence of a link farm and a malicious redirector suggests this document is part of a campaign to distribute malware or engage in SEO manipulation for malicious purposes. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.com/pify?keyword=dark+souls+2+soul+memory
    • http://files.tealthreads.com/uploads/1/3/2/6/132681464/4cca2.pdf
    • http://files.wolfetonesboston.com/uploads/1/3/0/9/130969553/bojijeto_fefimopesogod.pdf
    • http://files.sanbernardinohandyman.org/uploads/1/3/1/3/131379382/vusem.pdf
    • http://files.mrhansondai.com/uploads/1/3/1/6/131637178/7524635.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/dibaranaro.pdf
    • https://cdn.shopify.com/s/files/1/0429/1421/8151/files/gemovejoxibosiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/28148062701.pdf
    • https://cdn.shopify.com/s/files/1/0432/4491/2808/files/fagowiserofuzi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/xupukixunedetev.pdf
    • https://cdn.shopify.com/s/files/1/0434/5135/1200/files/goxuwavapenunopam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdf
    • https://cdn.shopify.com/s/files/1/0437/9780/7265/files/jiranedepode.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/mekugifigoferipovul.pdf
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/duguwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/88238488526.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_off00005e65.bin
1478b05ab5b81972f153f253d820f08535d17bf4990fc0b230c1fe194c1944ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E65 4776 bytes
font_01_sfnt_off00006eb0.bin
df602abb840fc80205c4648ae19cef880b1d505c6a991ea3a62cca28c5abb453		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB0 9932 bytes
font_02_sfnt_off000090ad.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90AD 4324 bytes

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