Malicious PDF — malware analysis report

Static analysis result for SHA-256 58170b787c51039b…

MALICIOUS

PDF

36.5 KB Created: 2020-08-21 22:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e45763903e588a2b21a10dece9c832d8 SHA-1: d85170a20831e1423981e6c0b1d8f9a66a525ea7 SHA-256: 58170b787c51039b7d0a4d1bee9add121da3ea780a57db3d18bda9e1ba5d0d92
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ttraff.com/pify?keyword=jawbone+bluetooth+headphones+manual, is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a product manual, suggesting a lure. The presence of numerous other links to Shopify and other domains, identified as a link farm, further supports the malicious intent of directing users to potentially harmful content. No scripts were extracted from this sample.

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=jawbone+bluetooth+headphones+manual
    • http://files.strikesforkidsseattle.com/uploads/1/3/1/0/131070849/sizapobuwep.pdf
    • http://piled.napsautosales.com/uploads/1/3/0/7/130775726/famomazirepix.pdf
    • http://files.biocoreintegration.com/uploads/1/3/2/8/132814589/jivik-namewezufunu-xanuw-rafiful.pdf
    • http://toxabufuf.thenetworkhe.com/uploads/1/3/0/7/130739777/5140790.pdf
    • http://files.tsubosalon.com/uploads/1/3/2/7/132740327/6dce625558cf8c.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/58975437820.pdf
    • https://cdn.shopify.com/s/files/1/0437/5203/0357/files/69761931825.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/mivokewumufe.pdf
    • https://cdn.shopify.com/s/files/1/0435/3749/8276/files/55792808269.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/37407396778.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5164/files/abbyy_transformer_full_espaol_mega.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/kufuxemuzopozibuxeteximo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4276/5976/files/voriroxisamewinafiwifavun.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_off00004eef.bin
9f6bec4b4161ef0a4476dd8c7b66705d126a4b5adf795706aab7a75aedacc779
pdf-font-stream PDF embedded font (sfnt) at offset 0x4EEF 5324 bytes
font_01_sfnt_off000060e9.bin
1fdea5173596558cc8efcf7f154dac59d8fd4cb2941ae9ba3b721792025ccc85
pdf-font-stream PDF embedded font (sfnt) at offset 0x60E9 10820 bytes