Malicious PDF — malware analysis report

Static analysis result for SHA-256 27b5a06b74e13a81…

MALICIOUS

PDF

44.0 KB Created: 2020-07-28 06:57:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dbba20d5e5ba6730b93fdeace2745e4 SHA-1: 0776c86689fe3f27cdcaa30482ac37eee2dffe9d SHA-256: 27b5a06b74e13a813971d155badf806a925dbc7b9ef386a8a0da094ccf2cb3b2
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, appears to contain keywords related to chemistry, suggesting a lure. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=acetate+de+sodium+formule
    • http://files.ramonbullard.com/uploads/1/3/0/7/130738704/dolevusuripesa-noruputagidix.pdf
    • http://files.goringgaphistory.org.uk/uploads/1/3/0/7/130774973/6819446.pdf
    • http://files.olivermsa.com/uploads/1/3/2/3/132302892/wadiwu-sadekutum-fobilibokepiwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3581/9173/files/gogoxejilisopiwopika.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/boruzizurano.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/niruwo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/zedupekerirelibigu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6775/8999/files/27308714639.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.pdf
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/raxagodis.pdf
    • https://cdn.shopify.com/s/files/1/0431/0096/2977/files/71757941346.pdf
    • https://cdn.shopify.com/s/files/1/0438/2624/9885/files/xavox.pdf
    • https://cdn.shopify.com/s/files/1/0428/6296/8991/files/mugewariwepeda.pdf
    • https://cdn.shopify.com/s/files/1/0428/4494/6588/files/bodasenadepuribepamafudo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/96305964567.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/files/1/0437/6775/8999/files/2

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006eb8.bin
e645ad23bb3ec6dbcfd3edbcf425a2089f9e2755983e0bcfe3db43f033fbb503		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB8 4932 bytes
font_01_sfnt_off00007f78.bin
7830b6c5930b1a9f1a145aa03ecd232fb101f4a407f9ce3b231fffd52727b32f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F78 10412 bytes

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