Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c7f0280f09cb77f…

MALICIOUS

PDF

53.1 KB Created: 2020-07-26 12:22:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e107716d71601b01d3521ae63fa3b1b9 SHA-1: cb23c9f99ba55da2a92cfa92ee9ab8c852e27336 SHA-256: 1c7f0280f09cb77f9ea9bb02ee36fe4eecc9bd505775bf858a8d3ba0de948b20
154 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, suggests a lure related to a 'leveling guide classic wow mage'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly indicate that this PDF is designed to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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=leveling+guide+classic+wow+mage
    • http://files.michaelellisphotos.com/uploads/1/3/0/8/130813827/1994274.pdf
    • http://files.fusionfightersdance.com/uploads/1/3/1/3/131383247/pezoxanasusupu.pdf
    • http://files.nyicnamatrimonial.com/uploads/1/3/2/6/132683088/83545a5f.pdf
    • http://files.barmillscommunitychurch.org/uploads/1/3/1/3/131398477/e19d3d6edd6e.pdf
    • http://files.shootingstarpwds.com/uploads/1/3/1/3/131383255/danavonera.pdf
    • https://cdn.shopify.com/s/files/1/0434/3398/4161/files/debevafiwatorapakamujulo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1962/2808/files/jufajanekapusovo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8107/1782/files/vixoza.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7974/files/xazul.pdf
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/83593986651.pdf
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/15511742742.pdf
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/88779777640.pdf
    • https://cdn.shopify.com/s/files/1/0437/4937/6161/files/39969495918.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6682/files/gezuloxupiwededo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5624/2589/files/99981957197.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vazakiliduvapi.pdf
    • https://cdn.shopify.com/s/files/1/0439/4264/1832/files/66979182782.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/
    • https://cdn.shopify.com/s/fi

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ce1.bin
f649bf7266aa2bc527d59c63b598d90ad072438cc46f1b909613a8d771baa8ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE1 5056 bytes
font_01_sfnt_off00008e0b.bin
382e80ff6d2d543671d6153118aad99586c11df86da0c2546500eabf51be736b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0B 10252 bytes
font_02_sfnt_off0000b117.bin
f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB117 16144 bytes

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