Malicious PDF — malware analysis report

Static analysis result for SHA-256 48b90eb163e67e6c…

MALICIOUS

PDF

161.5 KB Created: 2020-08-03 07:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6c7283886befb7ed85d1169a569d42e SHA-1: bf3c2b8b2b0f3630c6c1c8124df25ebbbfa7a14b SHA-256: 48b90eb163e67e6ccacfb16350434d448a9dc13e8387c1df5f3e0cd6dc13db13
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL points to 'ttraff.com', which is known for redirecting users to malicious sites. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The primary goal appears to be redirecting the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 2

  • 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.
  • 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=thermodynamics+cengel+8th+pdf
    • http://files.housefitstl.com/uploads/1/3/0/9/130969926/wibuwesikedun-darub-dugikavedak-wigisaxuta.pdf
    • http://files.freewheelingwriter.com/uploads/1/3/2/3/132302951/7373805.pdf
    • http://files.sunshinecoastmastersswimmingclub.com/uploads/1/3/0/7/130775197/c44b164.pdf
    • https://cdn.shopify.com/s/files/1/0433/7657/4620/files/neliw.pdf
    • https://cdn.shopify.com/s/files/1/0440/6388/3429/files/14685863523.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdf
    • https://cdn.shopify.com/s/files/1/0434/0259/2410/files/68534953274.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/45056420894.pdf
    • https://cdn.shopify.com/s/files/1/0432/7260/1756/files/82318253184.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nijudesiko.pdf
    • https://cdn.shopify.com/s/files/1/0430/0741/0329/files/golabalor.pdf
    • https://cdn.shopify.com/s/files/1/0434/8071/1325/files/tikuvevufilexazobaxajo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sarozasupevukofapunaxovu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/xatimolo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4716/5850/files/51973780352.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001fe30.bin
d47da0fa0d3badfbcd9401738d920672f9de53497543b4f9353aa086096a6340		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FE30 11208 bytes
font_01_sfnt_off00021df1.bin
5eaf2d16c7d480782165ab67ea6175d2759482234033c667a2cf00603744e4db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21DF1 5812 bytes
font_02_sfnt_off00023197.bin
2df30c64b97ccb2843abf29c5a8ff3ba720237445e9a583b0b2f07585fdb381c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23197 8976 bytes
font_03_sfnt_off0002435b.bin
12f52c9eb5a73998f2939f57d8d5ef823b5e239ef56b1742b10fee93b573eedd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2435B 16836 bytes

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